diff --git "a/cpython_chunk_15.py" "b/cpython_chunk_15.py" new file mode 100644--- /dev/null +++ "b/cpython_chunk_15.py" @@ -0,0 +1,16479 @@ +# Auto-generated from cpython_chunk_15.txt + +TEXT_DATA = r""" +.. date: 2022-12-05-01-39-10 +.. gh-issue: 100001 +.. nonce: uD05Fc +.. release date: 2022-12-06 +.. section: Security +``python -m http.server`` no longer allows terminal control characters sent +within a garbage request to be printed to the stderr server log. +This is done by changing the :mod:`http.server` +:class:`BaseHTTPRequestHandler` ``.log_message`` method to replace control +characters with a :samp:`\\x{HH}` hex escape before printing. +.. +.. date: 2022-11-11-12-50-28 +.. gh-issue: 87604 +.. nonce: OtwH5L +.. section: Security +Avoid publishing list of active per-interpreter audit hooks via the +:mod:`gc` module +.. +.. date: 2022-11-30-11-09-40 +.. gh-issue: 99891 +.. nonce: 9VomwB +.. section: Core and Builtins +Fix a bug in the tokenizer that could cause infinite recursion when showing +syntax warnings that happen in the first line of the source. Patch by Pablo +Galindo +.. +.. date: 2022-11-27-13-50-13 +.. gh-issue: 91054 +.. nonce: oox_kW +.. section: Core and Builtins +Add :c:func:`PyCode_AddWatcher` and :c:func:`PyCode_ClearWatcher` APIs to +register callbacks to receive notification on creation and destruction of +code objects. +.. +.. date: 2022-11-26-04-00-41 +.. gh-issue: 99729 +.. nonce: A3ovwQ +.. section: Core and Builtins +Fix an issue that could cause frames to be visible to Python code as they +are being torn down, possibly leading to memory corruption or hard crashes +of the interpreter. +.. +.. date: 2022-11-23-18-16-18 +.. gh-issue: 99708 +.. nonce: 7MuaiR +.. section: Core and Builtins +Fix bug where compiler crashes on an if expression with an empty body block. +.. +.. date: 2022-11-21-11-27-14 +.. gh-issue: 99578 +.. nonce: DcKoBJ +.. section: Core and Builtins +Fix a reference bug in :func:`!_imp.create_builtin` after the creation of +the first sub-interpreter for modules ``builtins`` and ``sys``. Patch by +Victor Stinner. +.. +.. date: 2022-11-19-22-27-52 +.. gh-issue: 99581 +.. nonce: yKYPbf +.. section: Core and Builtins +Fixed a bug that was causing a buffer overflow if the tokenizer copies a +line missing the newline character from a file that is as long as the +available tokenizer buffer. Patch by Pablo galindo +.. +.. date: 2022-11-18-11-24-25 +.. gh-issue: 99553 +.. nonce: F64h-n +.. section: Core and Builtins +Fix bug where an :exc:`ExceptionGroup` subclass can wrap a +:exc:`BaseException`. +.. +.. date: 2022-11-16-21-35-30 +.. gh-issue: 99547 +.. nonce: p_c_bp +.. section: Library +Add a function to os.path to check if a path is a junction: isjunction. Add +similar functionality to pathlib.Path as is_junction. +.. +.. date: 2022-11-12-01-39-57 +.. gh-issue: 99370 +.. nonce: _cu32j +.. section: Library +Fix zip path for venv created from a non-installed python on POSIX +platforms. +.. +.. date: 2022-11-11-14-04-01 +.. gh-issue: 99377 +.. nonce: -CJvWn +.. section: Core and Builtins +Add audit events for thread creation and clear operations. +.. +.. date: 2022-11-10-17-09-16 +.. gh-issue: 98686 +.. nonce: bmAKwr +.. section: Core and Builtins +Remove the ``BINARY_OP_GENERIC`` and ``COMPARE_OP_GENERIC`` +"specializations". +.. +.. date: 2022-11-10-16-53-40 +.. gh-issue: 99298 +.. nonce: HqRJES +.. section: Core and Builtins +Remove the remaining error paths for attribute specializations, and refuse +to specialize attribute accesses on types that haven't had +:c:func:`PyType_Ready` called on them yet. +.. +.. date: 2022-11-05-22-26-35 +.. gh-issue: 99127 +.. nonce: Btk7ih +.. section: Core and Builtins +Allow some features of :mod:`syslog` to the main interpreter only. Patch by +Donghee Na. +.. +.. date: 2022-10-05-11-44-52 +.. gh-issue: 91053 +.. nonce: f5Bo3p +.. section: Core and Builtins +Optimizing interpreters and JIT compilers may need to invalidate internal +metadata when functions are modified. This change adds the ability to +provide a callback that will be invoked each time a function is created, +modified, or destroyed. +.. +.. date: 2022-09-17-17-08-01 +.. gh-issue: 90994 +.. nonce: f0H2Yd +.. section: Core and Builtins +Improve error messages when there's a syntax error with call arguments. The +following three cases are covered: - No value is assigned to a named +argument, eg ``foo(a=)``. - A value is assigned to a star argument, eg +``foo(*args=[0])``. - A value is assigned to a double-star keyword argument, +eg ``foo(**kwarg={'a': 0})``. +.. +.. bpo: 45026 +.. date: 2021-08-29-15-55-19 +.. nonce: z7nTA3 +.. section: Core and Builtins +Optimize the :class:`range` object iterator. It is now smaller, faster +iteration of ranges containing large numbers. Smaller pickles, faster +unpickling. +.. +.. bpo: 31718 +.. date: 2020-02-23-23-48-15 +.. nonce: sXko5e +.. section: Core and Builtins +Raise :exc:`ValueError` instead of :exc:`SystemError` when methods of +uninitialized :class:`io.IncrementalNewlineDecoder` objects are called. +Patch by Oren Milman. +.. +.. bpo: 38031 +.. date: 2019-09-04-19-09-49 +.. nonce: Yq4L72 +.. section: Core and Builtins +Fix a possible assertion failure in :class:`io.FileIO` when the opener +returns an invalid file descriptor. +.. +.. date: 2022-12-05-13-40-15 +.. gh-issue: 100001 +.. nonce: 78ReYp +.. section: Library +Also \ escape \s in the http.server BaseHTTPRequestHandler.log_message so +that it is technically possible to parse the line and reconstruct what the +original data was. Without this a \xHH is ambiguous as to if it is a hex +replacement we put in or the characters r"\x" came through in the original +request line. +.. +.. date: 2022-12-03-05-58-48 +.. gh-issue: 99957 +.. nonce: jLYYgN +.. section: Library +Add ``frozen_default`` parameter to :func:`typing.dataclass_transform`. +.. +.. date: 2022-11-22-19-31-26 +.. gh-issue: 79033 +.. nonce: MW6kHq +.. section: Library +Fix :func:`asyncio.Server.wait_closed` to actually do what the docs promise +-- wait for all existing connections to complete, after closing the server. +.. +.. date: 2022-11-21-17-56-18 +.. gh-issue: 51524 +.. nonce: nTykx8 +.. section: Library +Fix bug when calling trace.CoverageResults with valid infile. +.. +.. date: 2022-11-21-13-49-03 +.. gh-issue: 99645 +.. nonce: 9w1QKq +.. section: Library +Fix a bug in handling class cleanups in :class:`unittest.TestCase`. Now +``addClassCleanup()`` uses separate lists for different ``TestCase`` +subclasses, and ``doClassCleanups()`` only cleans up the particular class. +.. +.. date: 2022-11-21-10-45-54 +.. gh-issue: 99508 +.. nonce: QqVbby +.. section: Library +Fix ``TypeError`` in ``Lib/importlib/_bootstrap_external.py`` while calling +``_imp.source_hash()``. +.. +.. date: 2022-11-17-10-56-47 +.. gh-issue: 66285 +.. nonce: KvjlaB +.. section: Library +Fix :mod:`asyncio` to not share event loop and signal wakeupfd in forked +processes. Patch by Kumar Aditya. +.. +.. date: 2022-11-15-10-55-24 +.. gh-issue: 97001 +.. nonce: KeQuVF +.. section: Library +Release the GIL when calling termios APIs to avoid blocking threads. +.. +.. date: 2022-11-15-04-08-25 +.. gh-issue: 92647 +.. nonce: cZcjnJ +.. section: Library +Use final status of an enum to determine lookup or creation branch of +functional API. +.. +.. date: 2022-11-14-08-21-56 +.. gh-issue: 99388 +.. nonce: UWSlwp +.. section: Library +Add *loop_factory* parameter to :func:`asyncio.run` to allow specifying a +custom event loop factory. Patch by Kumar Aditya. +.. +.. date: 2022-11-13-02-06-56 +.. gh-issue: 99341 +.. nonce: 8-OlwB +.. section: Library +Fix :func:`ast.increment_lineno` to also cover :class:`ast.TypeIgnore` when +changing line numbers. +.. +.. date: 2022-11-12-12-15-30 +.. gh-issue: 99382 +.. nonce: dKg_rW +.. section: Library +Check the number of arguments in substitution in user generics containing a +:class:`~typing.TypeVarTuple` and one or more :class:`~typing.TypeVar`. +.. +.. date: 2022-11-12-12-10-23 +.. gh-issue: 99379 +.. nonce: bcGhxF +.. section: Library +Fix substitution of :class:`~typing.ParamSpec` followed by +:class:`~typing.TypeVarTuple` in generic aliases. +.. +.. date: 2022-11-12-12-08-34 +.. gh-issue: 99344 +.. nonce: 7M_u8G +.. section: Library +Fix substitution of :class:`~typing.TypeVarTuple` and +:class:`~typing.ParamSpec` together in user generics. +.. +.. date: 2022-11-09-12-36-12 +.. gh-issue: 99284 +.. nonce: 9p4J2l +.. section: Library +Remove ``_use_broken_old_ctypes_structure_semantics_`` old untested and +undocumented hack from :mod:`ctypes`. +.. +.. date: 2022-11-09-03-34-29 +.. gh-issue: 99201 +.. nonce: lDJ7xI +.. section: Library +Fix :exc:`IndexError` when initializing the config variables on Windows if +``HAVE_DYNAMIC_LOADING`` is not set. +.. +.. date: 2022-11-08-15-54-43 +.. gh-issue: 99240 +.. nonce: MhYwcz +.. section: Library +Fix double-free bug in Argument Clinic ``str_converter`` by extracting +memory clean up to a new ``post_parsing`` section. +.. +.. date: 2022-11-08-11-18-51 +.. gh-issue: 64490 +.. nonce: VcBgrN +.. section: Library +Fix refcount error when arguments are packed to tuple in Argument Clinic. +.. +.. date: 2022-11-02-23-47-07 +.. gh-issue: 99029 +.. nonce: 7uCiIB +.. section: Library +:meth:`pathlib.PurePath.relative_to` now treats naked Windows drive paths +as relative. This brings its behaviour in line with other parts of pathlib. +.. +.. date: 2022-10-24-11-01-05 +.. gh-issue: 98253 +.. nonce: HVd5v4 +.. section: Library +The implementation of the typing module is now more resilient to reference +leaks in binary extension modules. +Previously, a reference leak in a typed C API-based extension module could +leak internals of the typing module, which could in turn introduce leaks in +essentially any other package with typed function signatures. Although the +typing package is not the original source of the problem, such non-local +dependences exacerbate debugging of large-scale projects, and the +implementation was therefore changed to reduce harm by providing better +isolation. +.. +.. date: 2022-10-19-18-31-53 +.. gh-issue: 98458 +.. nonce: vwyq7O +.. section: Library +Fix infinite loop in unittest when a self-referencing chained exception is +raised +.. +.. date: 2022-10-19-13-37-23 +.. gh-issue: 93453 +.. nonce: wTB_sH +.. section: Library +:func:`asyncio.get_event_loop` and many other :mod:`asyncio` functions like +:func:`asyncio.ensure_future`, :func:`asyncio.shield` or +:func:`asyncio.gather`, and also the +:meth:`~asyncio.BaseDefaultEventLoopPolicy.get_event_loop` method of +:class:`asyncio.BaseDefaultEventLoopPolicy` now raise a :exc:`RuntimeError` +if called when there is no running event loop and the current event loop was +not set. Previously they implicitly created and set a new current event +loop. :exc:`DeprecationWarning` is no longer emitted if there is no running +event loop but the current event loop was set. +.. +.. date: 2022-10-16-18-52-00 +.. gh-issue: 97966 +.. nonce: humlhz +.. section: Library +On ``uname_result``, restored expectation that ``_fields`` and ``_asdict`` +would include all six properties including ``processor``. +.. +.. date: 2022-10-13-22-13-54 +.. gh-issue: 98248 +.. nonce: lwyygy +.. section: Library +Provide informative error messages in :func:`struct.pack` when its integral +arguments are not in range. +.. +.. date: 2022-10-08-19-20-33 +.. gh-issue: 98108 +.. nonce: WUObqM +.. section: Library +``zipfile.Path`` is now pickleable if its initialization parameters were +pickleable (e.g. for file system paths). +.. +.. date: 2022-10-08-15-41-00 +.. gh-issue: 98098 +.. nonce: DugpWi +.. section: Library +Created packages from zipfile and test_zipfile modules, separating +``zipfile.Path`` functionality. +.. +.. date: 2022-10-02-12-38-22 +.. gh-issue: 82836 +.. nonce: OvYLmC +.. section: Library +Fix :attr:`~ipaddress.IPv4Address.is_private` properties in the +:mod:`ipaddress` module. Previously non-private networks (0.0.0.0/0) would +return ``True`` from this method; now they correctly return ``False``. +.. +.. date: 2022-09-14-21-56-15 +.. gh-issue: 96828 +.. nonce: ZoOY5G +.. section: Library +Add an :const:`~ssl.OP_ENABLE_KTLS` option for enabling the use of the kernel +TLS (kTLS). Patch by Illia Volochii. +.. +.. date: 2022-08-06-12-18-07 +.. gh-issue: 88863 +.. nonce: NnqsuJ +.. section: Library +To avoid apparent memory leaks when :func:`asyncio.open_connection` raises, +break reference cycles generated by local exception and future instances +(which has exception instance as its member var). Patch by Dong Uk, Kang. +.. +.. date: 2022-04-23-03-46-37 +.. gh-issue: 91078 +.. nonce: 87-hkp +.. section: Library +:meth:`TarFile.next` now returns ``None`` when called on an empty tarfile. +.. +.. bpo: 47220 +.. date: 2022-04-04-22-54-11 +.. nonce: L9jYu4 +.. section: Library +Document the optional *callback* parameter of :class:`WeakMethod`. Patch by +Géry Ogam. +.. +.. bpo: 44817 +.. date: 2021-08-03-05-31-00 +.. nonce: wOW_Qn +.. section: Library +Ignore WinError 53 (ERROR_BAD_NETPATH), 65 (ERROR_NETWORK_ACCESS_DENIED) and +161 (ERROR_BAD_PATHNAME) when using ntpath.realpath(). +.. +.. bpo: 41260 +.. date: 2020-08-02-23-46-22 +.. nonce: Q2BNzY +.. section: Library +Rename the *fmt* parameter of the pure Python implementation of +:meth:`datetime.date.strftime` to *format*. +.. +.. bpo: 15999 +.. date: 2019-08-30-10-48-53 +.. nonce: QqsRRi +.. section: Library +All built-in functions now accept arguments of any type instead of just +``bool`` and ``int`` for boolean parameters. +.. +.. date: 2022-12-02-17-08-08 +.. gh-issue: 99931 +.. nonce: wC46hE +.. section: Documentation +Use `sphinxext-opengraph `__ to +generate `OpenGraph metadata `__. +.. +.. date: 2022-11-26-21-43-05 +.. gh-issue: 89682 +.. nonce: DhKoTM +.. section: Documentation +Reworded docstring of the default ``__contains__`` to clarify that it +returns a :class:`bool`. +.. +.. date: 2022-11-26-15-51-23 +.. gh-issue: 88330 +.. nonce: B_wFq8 +.. section: Documentation +Improved the description of what a resource is in importlib.resources docs. +.. +.. date: 2022-11-16-12-52-23 +.. gh-issue: 92892 +.. nonce: TS-P0j +.. section: Documentation +Document that calling variadic functions with ctypes requires special care +on macOS/arm64 (and possibly other platforms). +.. +.. bpo: 41825 +.. date: 2020-09-22-12-32-16 +.. nonce: npcaCb +.. section: Documentation +Restructured the documentation for the :func:`os.wait* ` family of +functions, and improved the docs for :func:`os.waitid` with more explanation +of the possible argument constants. +.. +.. date: 2022-12-05-16-12-56 +.. gh-issue: 99892 +.. nonce: sz_eW8 +.. section: Tests +Skip test_normalization() of test_unicodedata if it fails to download +NormalizationTest.txt file from pythontest.net. Patch by Victor Stinner. +.. +.. date: 2022-12-01-18-55-18 +.. gh-issue: 99934 +.. nonce: Ox3Fqf +.. section: Tests +Correct test_marsh on (32 bit) x86: test_deterministic sets was failing. +.. +.. date: 2022-11-23-18-32-16 +.. gh-issue: 99741 +.. nonce: q4R7NH +.. section: Tests +We've implemented multi-phase init (PEP 489/630/687) for the internal (for +testing) _xxsubinterpreters module. +.. +.. date: 2022-11-21-19-21-30 +.. gh-issue: 99659 +.. nonce: 4gP0nm +.. section: Tests +Optional big memory tests in ``test_sqlite3`` now catch the correct +:exc:`sqlite.DataError` exception type in case of too large strings and/or +blobs passed. +.. +.. date: 2022-11-19-13-34-28 +.. gh-issue: 99593 +.. nonce: 8ZfCkj +.. section: Tests +Cover the Unicode C API with tests. +.. +.. date: 2022-08-22-15-49-14 +.. gh-issue: 96002 +.. nonce: 4UE9UE +.. section: Tests +Add functional test for Argument Clinic. +.. +.. date: 2022-11-24-02-58-10 +.. gh-issue: 99086 +.. nonce: DV_4Br +.. section: Build +Fix ``-Wimplicit-int``, ``-Wstrict-prototypes``, and +``-Wimplicit-function-declaration`` compiler warnings in +:program:`configure` checks. +.. +.. date: 2022-11-15-08-40-22 +.. gh-issue: 99337 +.. nonce: 5LoQDE +.. section: Build +Fix a compilation issue with GCC 12 on macOS. +.. +.. date: 2022-11-09-14-42-48 +.. gh-issue: 99289 +.. nonce: X7wFE1 +.. section: Build +Add a ``COMPILEALL_OPTS`` variable in Makefile to override :mod:`compileall` +options (default: ``-j0``) in ``make install``. Also merged the +``compileall`` commands into a single command building .pyc files for the +all optimization levels (0, 1, 2) at once. Patch by Victor Stinner. +.. +.. date: 2022-11-03-08-10-49 +.. gh-issue: 98872 +.. nonce: gdsR8X +.. section: Build +Fix a possible fd leak in ``Programs/_freeze_module.c`` introduced in Python +3.11. +.. +.. date: 2022-10-16-12-49-24 +.. gh-issue: 88226 +.. nonce: BsnQ4k +.. section: Build +Always define ``TARGET_*`` labels in ``Python/ceval.c``, even if +``USE_COMPUTED_GOTOS`` is disabled. This allows breakpoints to be set at +those labels in (for instance) ``gdb``. +.. +.. date: 2022-11-23-17-17-16 +.. gh-issue: 99345 +.. nonce: jOa3-f +.. section: Windows +Use faster initialization functions to detect install location for Windows +Store package +.. +.. date: 2022-11-21-19-50-18 +.. gh-issue: 98629 +.. nonce: tMmB_B +.. section: Windows +Fix initialization of :data:`sys.version` and ``sys._git`` on Windows +.. +.. date: 2022-11-16-19-03-21 +.. gh-issue: 99442 +.. nonce: 6Dgk3Q +.. section: Windows +Fix handling in :ref:`launcher` when ``argv[0]`` does not include a file +extension. +.. +.. bpo: 40882 +.. date: 2020-06-06-15-10-37 +.. nonce: UvNbdj +.. section: Windows +Fix a memory leak in :class:`multiprocessing.shared_memory.SharedMemory` on +Windows. +.. +.. date: 2022-11-25-09-23-20 +.. gh-issue: 87235 +.. nonce: SifjCD +.. section: macOS +On macOS ``python3 /dev/fd/9 9 if it does not exist. +.. +.. bpo: 25677 +.. date: 0415 +.. nonce: RWhZrb +.. section: Core and Builtins +Correct the positioning of the syntax error caret for indented blocks. Based +on patch by Michael Layzell. +.. +.. bpo: 29000 +.. date: 0414 +.. nonce: K6wQ-3 +.. section: Core and Builtins +Fixed bytes formatting of octals with zero padding in alternate form. +.. +.. bpo: 18896 +.. date: 0413 +.. nonce: Pqe0bg +.. section: Core and Builtins +Python function can now have more than 255 parameters. +collections.namedtuple() now supports tuples with more than 255 elements. +.. +.. bpo: 28596 +.. date: 0412 +.. nonce: snIJRd +.. section: Core and Builtins +The preferred encoding is UTF-8 on Android. Patch written by Chi Hsuan Yen. +.. +.. bpo: 22257 +.. date: 0411 +.. nonce: 2a8zxB +.. section: Core and Builtins +Clean up interpreter startup (see :pep:`432`). +.. +.. bpo: 26919 +.. date: 0410 +.. nonce: Cm7MSa +.. section: Core and Builtins +On Android, operating system data is now always encoded/decoded to/from +UTF-8, instead of the locale encoding to avoid inconsistencies with +os.fsencode() and os.fsdecode() which are already using UTF-8. +.. +.. bpo: 28991 +.. date: 0409 +.. nonce: lGA0FK +.. section: Core and Builtins +functools.lru_cache() was susceptible to an obscure reentrancy bug +triggerable by a monkey-patched len() function. +.. +.. bpo: 28147 +.. date: 0408 +.. nonce: CnK_xf +.. section: Core and Builtins +Fix a memory leak in split-table dictionaries: setattr() must not convert +combined table into split table. Patch written by INADA Naoki. +.. +.. bpo: 28739 +.. date: 0407 +.. nonce: w1fvhk +.. section: Core and Builtins +f-string expressions are no longer accepted as docstrings and by +ast.literal_eval() even if they do not include expressions. +.. +.. bpo: 28512 +.. date: 0406 +.. nonce: i-pv6d +.. section: Core and Builtins +Fixed setting the offset attribute of SyntaxError by +PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject(). +.. +.. bpo: 28918 +.. date: 0405 +.. nonce: SFVuPz +.. section: Core and Builtins +Fix the cross compilation of xxlimited when Python has been built with +Py_DEBUG defined. +.. +.. bpo: 23722 +.. date: 0404 +.. nonce: e8BH5h +.. section: Core and Builtins +Rather than silently producing a class that doesn't support zero-argument +``super()`` in methods, failing to pass the new ``__classcell__`` namespace +entry up to ``type.__new__`` now results in a ``DeprecationWarning`` and a +class that supports zero-argument ``super()``. +.. +.. bpo: 28797 +.. date: 0403 +.. nonce: _A0_Z5 +.. section: Core and Builtins +Modifying the class __dict__ inside the __set_name__ method of a descriptor +that is used inside that class no longer prevents calling the __set_name__ +method of other descriptors. +.. +.. bpo: 28799 +.. date: 0402 +.. nonce: cP6V1N +.. section: Core and Builtins +Remove the ``PyEval_GetCallStats()`` function and deprecate the untested and +undocumented ``sys.callstats()`` function. Remove the ``CALL_PROFILE`` +special build: use the :func:`sys.setprofile` function, :mod:`!cProfile` or +:mod:`!profile` to profile function calls. +.. +.. bpo: 12844 +.. date: 0401 +.. nonce: pdr3gY +.. section: Core and Builtins +More than 255 arguments can now be passed to a function. +.. +.. bpo: 28782 +.. date: 0400 +.. nonce: foJV_E +.. section: Core and Builtins +Fix a bug in the implementation ``yield from`` when checking if the next +instruction is YIELD_FROM. Regression introduced by WORDCODE (issue #26647). +.. +.. bpo: 28774 +.. date: 0399 +.. nonce: cEehAr +.. section: Core and Builtins +Fix error position of the unicode error in ASCII and Latin1 encoders when a +string returned by the error handler contains multiple non-encodable +characters (non-ASCII for the ASCII codec, characters out of the +U+0000-U+00FF range for Latin1). +.. +.. bpo: 28731 +.. date: 0398 +.. nonce: oNF59u +.. section: Core and Builtins +Optimize _PyDict_NewPresized() to create correct size dict. Improve speed of +dict literal with constant keys up to 30%. +.. +.. bpo: 28532 +.. date: 0397 +.. nonce: KEYJny +.. section: Core and Builtins +Show sys.version when -V option is supplied twice. +.. +.. bpo: 27100 +.. date: 0396 +.. nonce: poVjXq +.. section: Core and Builtins +The with-statement now checks for __enter__ before it checks for __exit__. +This gives less confusing error messages when both methods are missing. +Patch by Jonathan Ellington. +.. +.. bpo: 28746 +.. date: 0395 +.. nonce: r5MXdB +.. section: Core and Builtins +Fix the set_inheritable() file descriptor method on platforms that do not +have the ioctl FIOCLEX and FIONCLEX commands. +.. +.. bpo: 26920 +.. date: 0394 +.. nonce: 1URwGb +.. section: Core and Builtins +Fix not getting the locale's charset upon initializing the interpreter, on +platforms that do not have langinfo. +.. +.. bpo: 28648 +.. date: 0393 +.. nonce: z7B52W +.. section: Core and Builtins +Fixed crash in Py_DecodeLocale() in debug build on Mac OS X when decode +astral characters. Patch by Xiang Zhang. +.. +.. bpo: 28665 +.. date: 0392 +.. nonce: v4nx86 +.. section: Core and Builtins +Improve speed of the STORE_DEREF opcode by 40%. +.. +.. bpo: 19398 +.. date: 0391 +.. nonce: RYbEGH +.. section: Core and Builtins +Extra slash no longer added to sys.path components in case of empty +compile-time PYTHONPATH components. +.. +.. bpo: 28621 +.. date: 0390 +.. nonce: eCD7n- +.. section: Core and Builtins +Sped up converting int to float by reusing faster bits counting +implementation. Patch by Adrian Wielgosik. +.. +.. bpo: 28580 +.. date: 0389 +.. nonce: 8bqBmG +.. section: Core and Builtins +Optimize iterating split table values. Patch by Xiang Zhang. +.. +.. bpo: 28583 +.. date: 0388 +.. nonce: F-QAx1 +.. section: Core and Builtins +PyDict_SetDefault didn't combine split table when needed. Patch by Xiang +Zhang. +.. +.. bpo: 28128 +.. date: 0387 +.. nonce: Lc2sFu +.. section: Core and Builtins +Deprecation warning for invalid str and byte escape sequences now prints +better information about where the error occurs. Patch by Serhiy Storchaka +and Eric Smith. +.. +.. bpo: 28509 +.. date: 0386 +.. nonce: _Fa4Uq +.. section: Core and Builtins +dict.update() no longer allocate unnecessary large memory. +.. +.. bpo: 28426 +.. date: 0385 +.. nonce: E_quyK +.. section: Core and Builtins +Fixed potential crash in PyUnicode_AsDecodedObject() in debug build. +.. +.. bpo: 28517 +.. date: 0384 +.. nonce: ExPkm9 +.. section: Core and Builtins +Fixed of-by-one error in the peephole optimizer that caused keeping +unreachable code. +.. +.. bpo: 28214 +.. date: 0383 +.. nonce: 6ECJox +.. section: Core and Builtins +Improved exception reporting for problematic __set_name__ attributes. +.. +.. bpo: 23782 +.. date: 0382 +.. nonce: lonDzj +.. section: Core and Builtins +Fixed possible memory leak in _PyTraceback_Add() and exception loss in +PyTraceBack_Here(). +.. +.. bpo: 28183 +.. date: 0381 +.. nonce: MJZeNd +.. section: Core and Builtins +Optimize and cleanup dict iteration. +.. +.. bpo: 26081 +.. date: 0380 +.. nonce: _x5vjl +.. section: Core and Builtins +Added C implementation of asyncio.Future. Original patch by Yury Selivanov. +.. +.. bpo: 28379 +.. date: 0379 +.. nonce: DuXlco +.. section: Core and Builtins +Added sanity checks and tests for PyUnicode_CopyCharacters(). Patch by Xiang +Zhang. +.. +.. bpo: 28376 +.. date: 0378 +.. nonce: oPD-5D +.. section: Core and Builtins +The type of long range iterator is now registered as Iterator. Patch by Oren +Milman. +.. +.. bpo: 28376 +.. date: 0377 +.. nonce: yTEhEo +.. section: Core and Builtins +Creating instances of range_iterator by calling range_iterator type now is +disallowed. Calling iter() on range instance is the only way. Patch by Oren +Milman. +.. +.. bpo: 26906 +.. date: 0376 +.. nonce: YBjcwI +.. section: Core and Builtins +Resolving special methods of uninitialized type now causes implicit +initialization of the type instead of a fail. +.. +.. bpo: 18287 +.. date: 0375 +.. nonce: k6jffS +.. section: Core and Builtins +PyType_Ready() now checks that tp_name is not NULL. Original patch by Niklas +Koep. +.. +.. bpo: 24098 +.. date: 0374 +.. nonce: XqlP_1 +.. section: Core and Builtins +Fixed possible crash when AST is changed in process of compiling it. +.. +.. bpo: 28201 +.. date: 0373 +.. nonce: GWUxAy +.. section: Core and Builtins +Dict reduces possibility of 2nd conflict in hash table when hashes have same +lower bits. +.. +.. bpo: 28350 +.. date: 0372 +.. nonce: 8M5Eg9 +.. section: Core and Builtins +String constants with null character no longer interned. +.. +.. bpo: 26617 +.. date: 0371 +.. nonce: Gh5LvN +.. section: Core and Builtins +Fix crash when GC runs during weakref callbacks. +.. +.. bpo: 27942 +.. date: 0370 +.. nonce: ZGuhns +.. section: Core and Builtins +String constants now interned recursively in tuples and frozensets. +.. +.. bpo: 28289 +.. date: 0369 +.. nonce: l1kHlV +.. section: Core and Builtins +ImportError.__init__ now resets not specified attributes. +.. +.. bpo: 21578 +.. date: 0368 +.. nonce: GI1bhj +.. section: Core and Builtins +Fixed misleading error message when ImportError called with invalid keyword +args. +.. +.. bpo: 28203 +.. date: 0367 +.. nonce: LRn5vp +.. section: Core and Builtins +Fix incorrect type in complex(1.0, {2:3}) error message. Patch by Soumya +Sharma. +.. +.. bpo: 28086 +.. date: 0366 +.. nonce: JsQPMQ +.. section: Core and Builtins +Single var-positional argument of tuple subtype was passed unscathed to the +C-defined function. Now it is converted to exact tuple. +.. +.. bpo: 28214 +.. date: 0365 +.. nonce: zQF8Em +.. section: Core and Builtins +Now __set_name__ is looked up on the class instead of the instance. +.. +.. bpo: 27955 +.. date: 0364 +.. nonce: HC4pZ4 +.. section: Core and Builtins +Fallback on reading /dev/urandom device when the getrandom() syscall fails +with EPERM, for example when blocked by SECCOMP. +.. +.. bpo: 28192 +.. date: 0363 +.. nonce: eR6stU +.. section: Core and Builtins +Don't import readline in isolated mode. +.. +.. bpo: 27441 +.. date: 0362 +.. nonce: scPKax +.. section: Core and Builtins +Remove some redundant assignments to ob_size in longobject.c. Thanks Oren +Milman. +.. +.. bpo: 27222 +.. date: 0361 +.. nonce: 74PvFk +.. section: Core and Builtins +Clean up redundant code in long_rshift function. Thanks Oren Milman. +.. +.. bpo: 0 +.. date: 0360 +.. nonce: 9EbOiD +.. section: Core and Builtins +Upgrade internal unicode databases to Unicode version 9.0.0. +.. +.. bpo: 28131 +.. date: 0359 +.. nonce: owq0wW +.. section: Core and Builtins +Fix a regression in zipimport's compile_source(). zipimport should use the +same optimization level as the interpreter. +.. +.. bpo: 28126 +.. date: 0358 +.. nonce: Qf6-uQ +.. section: Core and Builtins +Replace Py_MEMCPY with memcpy(). Visual Studio can properly optimize +memcpy(). +.. +.. bpo: 28120 +.. date: 0357 +.. nonce: e5xc1i +.. section: Core and Builtins +Fix dict.pop() for split dictionary when trying to remove a "pending key" +(Not yet inserted in split-table). Patch by Xiang Zhang. +.. +.. bpo: 26182 +.. date: 0356 +.. nonce: jYlqTO +.. section: Core and Builtins +Raise DeprecationWarning when async and await keywords are used as +variable/attribute/class/function name. +.. +.. bpo: 26182 +.. date: 0355 +.. nonce: a8JXK2 +.. section: Core and Builtins +Fix a refleak in code that raises DeprecationWarning. +.. +.. bpo: 28721 +.. date: 0354 +.. nonce: BO9BUF +.. section: Core and Builtins +Fix asynchronous generators aclose() and athrow() to handle +StopAsyncIteration propagation properly. +.. +.. bpo: 26110 +.. date: 0353 +.. nonce: KRaID6 +.. section: Core and Builtins +Speed-up method calls: add LOAD_METHOD and CALL_METHOD opcodes. +.. +.. bpo: 31499 +.. date: 2017-09-18-10-57-04 +.. nonce: BydYhf +.. section: Library +xml.etree: Fix a crash when a parser is part of a reference cycle. +.. +.. bpo: 31482 +.. date: 2017-09-16-01-53-11 +.. nonce: 39s5dS +.. section: Library +``random.seed()`` now works with bytes in version=1 +.. +.. bpo: 28556 +.. date: 2017-09-14-11-02-56 +.. nonce: EUOiYs +.. section: Library +typing.get_type_hints now finds the right globalns for classes and modules +by default (when no ``globalns`` was specified by the caller). +.. +.. bpo: 28556 +.. date: 2017-09-13-23-27-39 +.. nonce: UmTQvv +.. section: Library +Speed improvements to the ``typing`` module. Original PRs by Ivan +Levkivskyi and Mitar. +.. +.. bpo: 31544 +.. date: 2017-09-13-19-55-35 +.. nonce: beTh6t +.. section: Library +The C accelerator module of ElementTree ignored exceptions raised when +looking up TreeBuilder target methods in XMLParser(). +.. +.. bpo: 31234 +.. date: 2017-09-13-18-05-56 +.. nonce: lGkcPg +.. section: Library +socket.create_connection() now fixes manually a reference cycle: clear the +variable storing the last exception on success. +.. +.. bpo: 31457 +.. date: 2017-09-13-13-33-39 +.. nonce: bIVBtI +.. section: Library +LoggerAdapter objects can now be nested. +.. +.. bpo: 31431 +.. date: 2017-09-13-07-37-20 +.. nonce: dj994R +.. section: Library +SSLContext.check_hostname now automatically sets SSLContext.verify_mode to +ssl.CERT_REQUIRED instead of failing with a ValueError. +.. +.. bpo: 31233 +.. date: 2017-09-13-02-17-11 +.. nonce: r-IPIu +.. section: Library +socketserver.ThreadingMixIn now keeps a list of non-daemonic threads to wait +until all these threads complete in server_close(). +.. +.. bpo: 28638 +.. date: 2017-09-08-14-31-15 +.. nonce: lfbVyH +.. section: Library +Changed the implementation strategy for collections.namedtuple() to +substantially reduce the use of exec() in favor of precomputed methods. As a +result, the *verbose* parameter and *_source* attribute are no longer +supported. The benefits include 1) having a smaller memory footprint for +applications using multiple named tuples, 2) faster creation of the named +tuple class (approx 4x to 6x depending on how it is measured), and 3) minor +speed-ups for instance creation using __new__, _make, and _replace. (The +primary patch contributor is Jelle Zijlstra with further improvements by +INADA Naoki, Serhiy Storchaka, and Raymond Hettinger.) +.. +.. bpo: 31400 +.. date: 2017-09-08-14-19-57 +.. nonce: YOTPKi +.. section: Library +Improves SSL error handling to avoid losing error numbers. +.. +.. bpo: 27629 +.. date: 2017-09-07-12-15-56 +.. nonce: 7xJXEy +.. section: Library +Make return types of SSLContext.wrap_bio() and SSLContext.wrap_socket() +customizable. +.. +.. bpo: 28958 +.. date: 2017-09-06-19-41-01 +.. nonce: x4-K5F +.. section: Library +ssl.SSLContext() now uses OpenSSL error information when a context cannot be +instantiated. +.. +.. bpo: 28182 +.. date: 2017-09-06-18-49-16 +.. nonce: hRP8Bk +.. section: Library +The SSL module now raises SSLCertVerificationError when OpenSSL fails to +verify the peer's certificate. The exception contains more information about +the error. +.. +.. bpo: 27340 +.. date: 2017-09-06-06-50-41 +.. nonce: GgekV5 +.. section: Library +SSLSocket.sendall() now uses memoryview to create slices of data. This fixes +support for all bytes-like object. It is also more efficient and avoids +costly copies. +.. +.. bpo: 14191 +.. date: 2017-09-05-17-43-00 +.. nonce: vhh2xx +.. section: Library +A new function ``argparse.ArgumentParser.parse_intermixed_args`` provides +the ability to parse command lines where there user intermixes options and +positional arguments. +.. +.. bpo: 31178 +.. date: 2017-09-05-14-55-28 +.. nonce: JrSFo7 +.. section: Library +Fix string concatenation bug in rare error path in the subprocess module +.. +.. bpo: 31350 +.. date: 2017-09-05-10-30-48 +.. nonce: dXJ-7N +.. section: Library +Micro-optimize :func:`asyncio._get_running_loop` to become up to 10% faster. +.. +.. bpo: 31170 +.. date: 2017-09-04-23-41-35 +.. nonce: QGmJ1t +.. section: Library +expat: Update libexpat from 2.2.3 to 2.2.4. Fix copying of partial +characters for UTF-8 input (libexpat bug 115): +https://github.com/libexpat/libexpat/issues/115 +.. +.. bpo: 29136 +.. date: 2017-09-04-16-39-49 +.. nonce: vSn1oR +.. section: Library +Add TLS 1.3 cipher suites and OP_NO_TLSv1_3. +.. +.. bpo: 1198569 +.. date: 2017-09-04-10-53-06 +.. nonce: vhh2nY +.. section: Library +``string.Template`` subclasses can optionally define ``braceidpattern`` if +they want to specify different placeholder patterns inside and outside the +braces. If None (the default) it falls back to ``idpattern``. +.. +.. bpo: 31326 +.. date: 2017-09-01-18-48-06 +.. nonce: TB05tV +.. section: Library +concurrent.futures.ProcessPoolExecutor.shutdown() now explicitly closes the +call queue. Moreover, shutdown(wait=True) now also join the call queue +thread, to prevent leaking a dangling thread. +.. +.. bpo: 27144 +.. date: 2017-08-30-11-26-14 +.. nonce: PEDJsE +.. section: Library +The ``map()`` and ``as_completed()`` iterators in ``concurrent.futures`` now +avoid keeping a reference to yielded objects. +.. +.. bpo: 31281 +.. date: 2017-08-29-07-14-14 +.. nonce: DcFyNs +.. section: Library +Fix ``fileinput.FileInput(files, inplace=True)`` when ``files`` contain +``pathlib.Path`` objects. +.. +.. bpo: 10746 +.. date: 2017-08-28-13-01-05 +.. nonce: nmAvfu +.. section: Library +Fix ctypes producing wrong :pep:`3118` type codes for integer types. +.. +.. bpo: 27584 +.. date: 2017-08-24-14-03-14 +.. nonce: r11JHZ +.. section: Library +``AF_VSOCK`` has been added to the socket interface which allows +communication between virtual machines and their host. +.. +.. bpo: 22536 +.. date: 2017-08-23 +.. nonce: _narf_ +.. section: Library +The subprocess module now sets the filename when FileNotFoundError is raised +on POSIX systems due to the executable or cwd not being found. +.. +.. bpo: 29741 +.. date: 2017-08-23-00-31-32 +.. nonce: EBn_DM +.. section: Library +Update some methods in the _pyio module to also accept integer types. Patch +by Oren Milman. +.. +.. bpo: 31249 +.. date: 2017-08-22-12-44-48 +.. nonce: STPbb9 +.. section: Library +concurrent.futures: WorkItem.run() used by ThreadPoolExecutor now breaks a +reference cycle between an exception object and the WorkItem object. +.. +.. bpo: 31247 +.. date: 2017-08-21-17-50-27 +.. nonce: 8S3zJp +.. section: Library +xmlrpc.server now explicitly breaks reference cycles when using +sys.exc_info() in code handling exceptions. +.. +.. bpo: 23835 +.. date: 2017-08-21-16-06-19 +.. nonce: da_4Kz +.. section: Library +configparser: reading defaults in the ``ConfigParser()`` constructor is now +using ``read_dict()``, making its behavior consistent with the rest of the +parser. Non-string keys and values in the defaults dictionary are now being +implicitly converted to strings. Patch by James Tocknell. +.. +.. bpo: 31238 +.. date: 2017-08-21-12-31-53 +.. nonce: Gg0LRH +.. section: Library +pydoc: the stop() method of the private ServerThread class now waits until +DocServer.serve_until_quit() completes and then explicitly sets its +docserver attribute to None to break a reference cycle. +.. +.. bpo: 5001 +.. date: 2017-08-18-17-16-38 +.. nonce: gwnthq +.. section: Library +Many asserts in ``multiprocessing`` are now more informative, and some error +types have been changed to more specific ones. +.. +.. bpo: 31109 +.. date: 2017-08-17-20-29-45 +.. nonce: 7qtC64 +.. section: Library +Convert zipimport to use Argument Clinic. +.. +.. bpo: 30102 +.. date: 2017-08-16-21-14-31 +.. nonce: 1sPqmc +.. section: Library +The ssl and hashlib modules now call OPENSSL_add_all_algorithms_noconf() on +OpenSSL < 1.1.0. The function detects CPU features and enables optimizations +on some CPU architectures such as POWER8. Patch is based on research from +Gustavo Serra Scalet. +.. +.. bpo: 18966 +.. date: 2017-08-16-20-28-06 +.. nonce: mjHWk2 +.. section: Library +Non-daemonic threads created by a multiprocessing.Process are now joined on +child exit. +.. +.. bpo: 31183 +.. date: 2017-08-13-09-17-01 +.. nonce: -2_YGj +.. section: Library +``dis`` now works with asynchronous generator and coroutine objects. Patch by +George Collins based on diagnosis by Luciano Ramalho. +.. +.. bpo: 5001 +.. date: 2017-08-12-09-25-55 +.. nonce: huQi2Y +.. section: Library +There are a number of uninformative asserts in the ``multiprocessing`` module, +as noted in issue 5001. This change fixes two of the most potentially +problematic ones, since they are in error-reporting code, in the +``multiprocessing.managers.convert_to_error`` function. (It also makes more +informative a ValueError message.) The only potentially problematic change +is that the AssertionError is now a TypeError; however, this should also +help distinguish it from an AssertionError being *reported* by the +function/its caller (such as in issue 31169). - Patch by Allen W. Smith +(drallensmith on github). +.. +.. bpo: 31185 +.. date: 2017-08-11-19-30-00 +.. nonce: i6TPgL +.. section: Library +Fixed miscellaneous errors in asyncio speedup module. +.. +.. bpo: 31151 +.. date: 2017-08-10-13-20-02 +.. nonce: 730VBI +.. section: Library +socketserver.ForkingMixIn.server_close() now waits until all child processes +completed to prevent leaking zombie processes. +.. +.. bpo: 31072 +.. date: 2017-08-09-13-45-23 +.. nonce: NLXDPV +.. section: Library +Add an ``include_file`` parameter to ``zipapp.create_archive()`` +.. +.. bpo: 24700 +.. date: 2017-08-08-15-14-34 +.. nonce: 44mvNV +.. section: Library +Optimize array.array comparison. It is now from 10x up to 70x faster when +comparing arrays holding values of the same integer type. +.. +.. bpo: 31135 +.. date: 2017-08-08-14-44-37 +.. nonce: HH94xR +.. section: Library +ttk: fix the destroy() method of LabeledScale and OptionMenu classes. Call +the parent destroy() method even if the used attribute doesn't exist. The +LabeledScale.destroy() method now also explicitly clears label and scale +attributes to help the garbage collector to destroy all widgets. +.. +.. bpo: 31107 +.. date: 2017-08-02-12-48-15 +.. nonce: 1t2hn5 +.. section: Library +Fix ``copyreg._slotnames()`` mangled attribute calculation for classes whose +name begins with an underscore. Patch by Shane Harvey. +.. +.. bpo: 31080 +.. date: 2017-08-01-18-26-55 +.. nonce: 2CFVCO +.. section: Library +Allow ``logging.config.fileConfig`` to accept kwargs and/or args. +.. +.. bpo: 30897 +.. date: 2017-08-01-15-56-50 +.. nonce: OuT1-Y +.. section: Library +``pathlib.Path`` objects now include an ``is_mount()`` method (only +implemented on POSIX). This is similar to ``os.path.ismount(p)``. Patch by +Cooper Ry Lees. +.. +.. bpo: 31061 +.. date: 2017-08-01-09-32-58 +.. nonce: husAYX +.. section: Library +Fixed a crash when using asyncio and threads. +.. +.. bpo: 30987 +.. date: 2017-07-30-22-00-12 +.. nonce: 228rW0 +.. section: Library +Added support for CAN ISO-TP protocol in the socket module. +.. +.. bpo: 30522 +.. date: 2017-07-30-10-07-58 +.. nonce: gAX1N- +.. section: Library +Added a ``setStream`` method to ``logging.StreamHandler`` to allow the +stream to be set after creation. +.. +.. bpo: 30502 +.. date: 2017-07-27-11-33-58 +.. nonce: GJlfU8 +.. section: Library +Fix handling of long oids in ssl. Based on patch by Christian Heimes. +.. +.. bpo: 5288 +.. date: 2017-07-26-13-18-29 +.. nonce: o_xEGj +.. section: Library +Support tzinfo objects with sub-minute offsets. +.. +.. bpo: 30919 +.. date: 2017-07-23-11-33-10 +.. nonce: 5dYRru +.. section: Library +Fix shared memory performance regression in multiprocessing in 3.x. +Shared memory used anonymous memory mappings in 2.x, while 3.x mmaps actual +files. Try to be careful to do as little disk I/O as possible. +.. +.. bpo: 26732 +.. date: 2017-07-22-12-12-42 +.. nonce: lYLWBH +.. section: Library +Fix too many fds in processes started with the "forkserver" method. +A child process would inherit as many fds as the number of still-running +children. +.. +.. bpo: 29403 +.. date: 2017-07-20-02-29-49 +.. nonce: 3RinCV +.. section: Library +Fix ``unittest.mock``'s autospec to not fail on method-bound builtin +functions. Patch by Aaron Gallagher. +.. +.. bpo: 30961 +.. date: 2017-07-18-23-47-51 +.. nonce: 064jz0 +.. section: Library +Fix decrementing a borrowed reference in tracemalloc. +.. +.. bpo: 19896 +.. date: 2017-07-18-13-24-50 +.. nonce: -S0IWu +.. section: Library +Fix multiprocessing.sharedctypes to recognize typecodes ``'q'`` and ``'Q'``. +.. +.. bpo: 30946 +.. date: 2017-07-17-12-32-47 +.. nonce: DUo-uA +.. section: Library +Remove obsolete code in readline module for platforms where GNU readline is +older than 2.1 or where select() is not available. +.. +.. bpo: 25684 +.. date: 2017-07-17-11-35-00 +.. nonce: usELVx +.. section: Library +Change ``ttk.OptionMenu`` radiobuttons to be unique across instances of +``OptionMenu``. +.. +.. bpo: 30886 +.. date: 2017-07-10-12-14-22 +.. nonce: nqQj34 +.. section: Library +Fix multiprocessing.Queue.join_thread(): it now waits until the thread +completes, even if the thread was started by the same process which created +the queue. +.. +.. bpo: 29854 +.. date: 2017-07-07-02-18-57 +.. nonce: J8wKb_ +.. section: Library +Fix segfault in readline when using readline's history-size option. Patch +by Nir Soffer. +.. +.. bpo: 30794 +.. date: 2017-07-04-22-00-20 +.. nonce: qFwozm +.. section: Library +Added multiprocessing.Process.kill method to terminate using the SIGKILL +signal on Unix. +.. +.. bpo: 30319 +.. date: 2017-07-04-13-48-21 +.. nonce: hg_3TX +.. section: Library +socket.close() now ignores ECONNRESET error. +.. +.. bpo: 30828 +.. date: 2017-07-04-13-10-52 +.. nonce: CLvEvV +.. section: Library +Fix out of bounds write in ``asyncio.CFuture.remove_done_callback()``. +.. +.. bpo: 30302 +.. date: 2017-06-30-23-05-47 +.. nonce: itwK_k +.. section: Library +Use keywords in the ``repr`` of ``datetime.timedelta``. +.. +.. bpo: 30807 +.. date: 2017-06-29-22-04-44 +.. nonce: sLtjY- +.. section: Library +signal.setitimer() may disable the timer when passed a tiny value. +Tiny values (such as 1e-6) are valid non-zero values for setitimer(), which +is specified as taking microsecond-resolution intervals. However, on some +platform, our conversion routine could convert 1e-6 into a zero interval, +therefore disabling the timer instead of (re-)scheduling it. +.. +.. bpo: 30441 +.. date: 2017-06-29-14-25-14 +.. nonce: 3Wh9kc +.. section: Library +Fix bug when modifying os.environ while iterating over it +.. +.. bpo: 29585 +.. date: 2017-06-29-00-17-38 +.. nonce: x2V0my +.. section: Library +Avoid importing ``sysconfig`` from ``site`` to improve startup speed. Python +startup is about 5% faster on Linux and 30% faster on macOS. +.. +.. bpo: 29293 +.. date: 2017-06-29-00-07-22 +.. nonce: Z6WZjD +.. section: Library +Add missing parameter "n" on multiprocessing.Condition.notify(). +The doc claims multiprocessing.Condition behaves like threading.Condition, +but its notify() method lacked the optional "n" argument (to specify the +number of sleepers to wake up) that threading.Condition.notify() accepts. +.. +.. bpo: 30532 +.. date: 2017-06-26-11-01-59 +.. nonce: qTeL1o +.. section: Library +Fix email header value parser dropping folding white space in certain cases. +.. +.. bpo: 30596 +.. date: 2017-06-24-18-55-58 +.. nonce: VhB8iG +.. section: Library +Add a ``close()`` method to ``multiprocessing.Process``. +.. +.. bpo: 9146 +.. date: 2017-05-24-00-00-00 +.. nonce: pinky_ +.. section: Library +Fix a segmentation fault in _hashopenssl when standard hash functions such +as md5 are not available in the linked OpenSSL library. As in some special +FIPS-140 build environments. +.. +.. bpo: 29169 +.. date: 0352 +.. nonce: 8ypApm +.. section: Library +Update zlib to 1.2.11. +.. +.. bpo: 30119 +.. date: 0351 +.. nonce: 4UMLNh +.. section: Library +ftplib.FTP.putline() now throws ValueError on commands that contains CR or +LF. Patch by Donghee Na. +.. +.. bpo: 30879 +.. date: 0350 +.. nonce: N3KI-o +.. section: Library +os.listdir() and os.scandir() now emit bytes names when called with +bytes-like argument. +.. +.. bpo: 30746 +.. date: 0349 +.. nonce: 7drQI0 +.. section: Library +Prohibited the '=' character in environment variable names in +``os.putenv()`` and ``os.spawn*()``. +.. +.. bpo: 30664 +.. date: 0348 +.. nonce: oyqiUl +.. section: Library +The description of a unittest subtest now preserves the order of keyword +arguments of TestCase.subTest(). +.. +.. bpo: 21071 +.. date: 0346 +.. nonce: Sw37rs +.. section: Library +struct.Struct.format type is now :class:`str` instead of :class:`bytes`. +.. +.. bpo: 29212 +.. date: 0345 +.. nonce: HmTdef +.. section: Library +Fix concurrent.futures.thread.ThreadPoolExecutor threads to have a non +repr() based thread name by default when no thread_name_prefix is supplied. +They will now identify themselves as "ThreadPoolExecutor-y_n". +.. +.. bpo: 29755 +.. date: 0343 +.. nonce: diQcY_ +.. section: Library +Fixed the lgettext() family of functions in the gettext module. They now +always return bytes. +.. +.. bpo: 30616 +.. date: 0341 +.. nonce: I2mDTz +.. section: Library +Functional API of enum allows to create empty enums. Patched by Donghee Na +.. +.. bpo: 30038 +.. date: 0340 +.. nonce: vb4DWk +.. section: Library +Fix race condition between signal delivery and wakeup file descriptor. Patch +by Nathaniel Smith. +.. +.. bpo: 23894 +.. date: 0339 +.. nonce: k2pADV +.. section: Library +lib2to3 now recognizes ``rb'...'`` and ``f'...'`` strings. +.. +.. bpo: 24744 +.. date: 0337 +.. nonce: NKxUj3 +.. section: Library +pkgutil.walk_packages function now raises ValueError if *path* is a string. +Patch by Sanyam Khurana. +.. +.. bpo: 24484 +.. date: 0336 +.. nonce: vFem8K +.. section: Library +Avoid race condition in multiprocessing cleanup. +.. +.. bpo: 30589 +.. date: 0335 +.. nonce: xyZGM0 +.. section: Library +Fix multiprocessing.Process.exitcode to return the opposite of the signal +number when the process is killed by a signal (instead of 255) when using +the "forkserver" method. +.. +.. bpo: 28994 +.. date: 0334 +.. nonce: 9vzun1 +.. section: Library +The traceback no longer displayed for SystemExit raised in a callback +registered by atexit. +.. +.. bpo: 30508 +.. date: 0333 +.. nonce: wNWRS2 +.. section: Library +Don't log exceptions if Task/Future "cancel()" method was called. +.. +.. bpo: 30645 +.. date: 0332 +.. nonce: xihJ4Y +.. section: Library +Fix path calculation in ``imp.load_package()``, fixing it for cases when a +package is only shipped with bytecodes. Patch by Alexandru Ardelean. +.. +.. bpo: 11822 +.. date: 0331 +.. nonce: GQmKw3 +.. section: Library +The dis.dis() function now is able to disassemble nested code objects. +.. +.. bpo: 30624 +.. date: 0330 +.. nonce: g5oVSn +.. section: Library +selectors does not take KeyboardInterrupt and SystemExit into account, +leaving a fd in a bad state in case of error. Patch by Giampaolo Rodola'. +.. +.. bpo: 30595 +.. date: 0329 +.. nonce: d0nRRA +.. section: Library +multiprocessing.Queue.get() with a timeout now polls its reader in +non-blocking mode if it succeeded to acquire the lock but the acquire took +longer than the timeout. +.. +.. bpo: 28556 +.. date: 0328 +.. nonce: mESP7G +.. section: Library +Updates to typing module: Add generic AsyncContextManager, add support for +ContextManager on all versions. Original PRs by Jelle Zijlstra and Ivan +Levkivskyi +.. +.. bpo: 30605 +.. date: 0327 +.. nonce: XqGz1r +.. section: Library +re.compile() no longer raises a BytesWarning when compiling a bytes instance +with misplaced inline modifier. Patch by Roy Williams. +.. +.. bpo: 29870 +.. date: 0326 +.. nonce: p960Ih +.. section: Library +Fix ssl sockets leaks when connection is aborted in asyncio/ssl +implementation. Patch by Michaël Sghaïer. +.. +.. bpo: 29743 +.. date: 0325 +.. nonce: en2P4s +.. section: Library +Closing transport during handshake process leaks open socket. Patch by +Nikolay Kim +.. +.. bpo: 27585 +.. date: 0324 +.. nonce: 0Ugqqu +.. section: Library +Fix waiter cancellation in asyncio.Lock. Patch by Mathieu Sornay. +.. +.. bpo: 30014 +.. date: 0323 +.. nonce: x7Yx6o +.. section: Library +modify() method of poll(), epoll() and devpoll() based classes of selectors +module is around 10% faster. Patch by Giampaolo Rodola'. +.. +.. bpo: 30418 +.. date: 0322 +.. nonce: EwISQm +.. section: Library +On Windows, subprocess.Popen.communicate() now also ignore EINVAL on +stdin.write() if the child process is still running but closed the pipe. +.. +.. bpo: 30463 +.. date: 0321 +.. nonce: CdOuSl +.. section: Library +Added empty __slots__ to abc.ABC. This allows subclassers to deny __dict__ +and __weakref__ creation. Patch by Aaron Hall. +.. +.. bpo: 30520 +.. date: 0320 +.. nonce: VYzaSn +.. section: Library +Loggers are now pickleable. +.. +.. bpo: 30557 +.. date: 0319 +.. nonce: uykrLf +.. section: Library +faulthandler now correctly filters and displays exception codes on Windows +.. +.. bpo: 30526 +.. date: 0318 +.. nonce: 7zTG30 +.. section: Library +Add TextIOWrapper.reconfigure() and a TextIOWrapper.write_through attribute. +.. +.. bpo: 30245 +.. date: 0317 +.. nonce: Xoa_8Y +.. section: Library +Fix possible overflow when organize struct.pack_into error message. Patch +by Yuan Liu. +.. +.. bpo: 30378 +.. date: 0316 +.. nonce: R_19_5 +.. section: Library +Fix the problem that logging.handlers.SysLogHandler cannot handle IPv6 +addresses. +.. +.. bpo: 16500 +.. date: 0315 +.. nonce: 9ypo9k +.. section: Library +Allow registering at-fork handlers. +.. +.. bpo: 30470 +.. date: 0314 +.. nonce: wAYhUc +.. section: Library +Deprecate invalid ctypes call protection on Windows. Patch by Mariatta +Wijaya. +.. +.. bpo: 30414 +.. date: 0313 +.. nonce: jGl1Lb +.. section: Library +multiprocessing.Queue._feed background running thread do not break from main +loop on exception. +.. +.. bpo: 30003 +.. date: 0312 +.. nonce: BOl9HE +.. section: Library +Fix handling escape characters in HZ codec. Based on patch by Ma Lin. +.. +.. bpo: 30149 +.. date: 0311 +.. nonce: hE649r +.. section: Library +inspect.signature() now supports callables with variable-argument parameters +wrapped with partialmethod. Patch by Donghee Na. +.. +.. bpo: 30436 +.. date: 0310 +.. nonce: b3zqE7 +.. section: Library +importlib.find_spec() raises ModuleNotFoundError instead of AttributeError +if the specified parent module is not a package (i.e. lacks a __path__ +attribute). +.. +.. bpo: 30301 +.. date: 0309 +.. nonce: ywOkjN +.. section: Library +Fix AttributeError when using SimpleQueue.empty() under *spawn* and +*forkserver* start methods. +.. +.. bpo: 30375 +.. date: 0308 +.. nonce: 9c8qM7 +.. section: Library +Warnings emitted when compile a regular expression now always point to the +line in the user code. Previously they could point into inners of the re +module if emitted from inside of groups or conditionals. +.. +.. bpo: 30329 +.. date: 0307 +.. nonce: EuT36N +.. section: Library +imaplib and poplib now catch the Windows socket WSAEINVAL error (code 10022) +on shutdown(SHUT_RDWR): An invalid operation was attempted. This error +occurs sometimes on SSL connections. +.. +.. bpo: 29196 +.. date: 0306 +.. nonce: qBq9eB +.. section: Library +Removed previously deprecated in Python 2.4 classes Plist, Dict and +_InternalDict in the plistlib module. Dict values in the result of +functions readPlist() and readPlistFromBytes() are now normal dicts. You no +longer can use attribute access to access items of these dictionaries. +.. +.. bpo: 9850 +.. date: 0305 +.. nonce: c6SMxt +.. section: Library +The :mod:`macpath` is now deprecated and will be removed in Python 3.8. +.. +.. bpo: 30299 +.. date: 0304 +.. nonce: O-5d4A +.. section: Library +Compiling regular expression in debug mode on CPython now displays the +compiled bytecode in human readable form. +.. +.. bpo: 30048 +.. date: 0303 +.. nonce: ELRx8R +.. section: Library +Fixed ``Task.cancel()`` can be ignored when the task is running coroutine +and the coroutine returned without any more ``await``. +.. +.. bpo: 30266 +.. date: 0302 +.. nonce: YJzHAH +.. section: Library +contextlib.AbstractContextManager now supports anti-registration by setting +__enter__ = None or __exit__ = None, following the pattern introduced in +bpo-25958. Patch by Jelle Zijlstra. +.. +.. bpo: 30340 +.. date: 0301 +.. nonce: kvtGm- +.. section: Library +Enhanced regular expressions optimization. This increased the performance of +matching some patterns up to 25 times. +.. +.. bpo: 30298 +.. date: 0300 +.. nonce: ZN-bWo +.. section: Library +Weaken the condition of deprecation warnings for inline modifiers. Now +allowed several subsequential inline modifiers at the start of the pattern +(e.g. ``'(?i)(?s)...'``). In verbose mode whitespaces and comments now are +allowed before and between inline modifiers (e.g. ``'(?x) (?i) (?s)...'``). +.. +.. bpo: 30285 +.. date: 0299 +.. nonce: s1vpsO +.. section: Library +Optimized case-insensitive matching and searching of regular expressions. +.. +.. bpo: 29990 +.. date: 0298 +.. nonce: HWV6KE +.. section: Library +Fix range checking in GB18030 decoder. Original patch by Ma Lin. +.. +.. bpo: 29979 +.. date: 0297 +.. nonce: jGBMyE +.. section: Library +rewrite cgi.parse_multipart, reusing the FieldStorage class and making its +results consistent with those of FieldStorage for multipart/form-data +requests. Patch by Pierre Quentel. +.. +.. bpo: 30243 +.. date: 0296 +.. nonce: RHQt0v +.. section: Library +Removed the __init__ methods of _json's scanner and encoder. Misusing them +could cause memory leaks or crashes. Now scanner and encoder objects are +completely initialized in the __new__ methods. +.. +.. bpo: 30215 +.. date: 0295 +.. nonce: SY8738 +.. section: Library +Compiled regular expression objects with the re.LOCALE flag no longer depend +on the locale at compile time. Only the locale at matching time affects the +result of matching. +.. +.. bpo: 30185 +.. date: 0294 +.. nonce: Tiu1n8 +.. section: Library +Avoid KeyboardInterrupt tracebacks in forkserver helper process when Ctrl-C +is received. +.. +.. bpo: 30103 +.. date: 0293 +.. nonce: mmPjf5 +.. section: Library +binascii.b2a_uu() and uu.encode() now support using ``'`'`` as zero instead +of space. +.. +.. bpo: 28556 +.. date: 0292 +.. nonce: 51gjbP +.. section: Library +Various updates to typing module: add typing.NoReturn type, use +WrapperDescriptorType, minor bug-fixes. Original PRs by Jim +Fasarakis-Hilliard and Ivan Levkivskyi. +.. +.. bpo: 30205 +.. date: 0291 +.. nonce: BsxO34 +.. section: Library +Fix getsockname() for unbound AF_UNIX sockets on Linux. +.. +.. bpo: 30228 +.. date: 0290 +.. nonce: nF8Ov4 +.. section: Library +The seek() and tell() methods of io.FileIO now set the internal seekable +attribute to avoid one syscall on open() (in buffered or text mode). +.. +.. bpo: 30190 +.. date: 0289 +.. nonce: 5E7Hyb +.. section: Library +unittest's assertAlmostEqual and assertNotAlmostEqual provide a better +message in case of failure which includes the difference between left and +right arguments. (patch by Giampaolo Rodola') +.. +.. bpo: 30101 +.. date: 0288 +.. nonce: hxUqSL +.. section: Library +Add support for curses.A_ITALIC. +.. +.. bpo: 29822 +.. date: 0287 +.. nonce: G7dX13 +.. section: Library +inspect.isabstract() now works during __init_subclass__. Patch by Nate +Soares. +.. +.. bpo: 29960 +.. date: 0286 +.. nonce: g0wr3r +.. section: Library +Preserve generator state when _random.Random.setstate() raises an exception. +Patch by Bryan Olson. +.. +.. bpo: 30070 +.. date: 0285 +.. nonce: XM_B41 +.. section: Library +Fixed leaks and crashes in errors handling in the parser module. +.. +.. bpo: 22352 +.. date: 0284 +.. nonce: gIQ5qC +.. section: Library +Column widths in the output of dis.dis() are now adjusted for large line +numbers and instruction offsets. +.. +.. bpo: 30061 +.. date: 0283 +.. nonce: 2w_dX9 +.. section: Library +Fixed crashes in IOBase methods __next__() and readlines() when readline() +or __next__() respectively return non-sizeable object. Fixed possible other +errors caused by not checking results of PyObject_Size(), PySequence_Size(), +or PyMapping_Size(). +.. +.. bpo: 30218 +.. date: 0282 +.. nonce: ab5oIg +.. section: Library +Fix PathLike support for shutil.unpack_archive. Patch by Jelle Zijlstra. +.. +.. bpo: 10076 +.. date: 0281 +.. nonce: qCnwly +.. section: Library +Compiled regular expression and match objects in the re module now support +copy.copy() and copy.deepcopy() (they are considered atomic). +.. +.. bpo: 30068 +.. date: 0280 +.. nonce: n4q47r +.. section: Library +_io._IOBase.readlines will check if it's closed first when hint is present. +.. +.. bpo: 29694 +.. date: 0279 +.. nonce: LWKxb1 +.. section: Library +Fixed race condition in pathlib mkdir with flags parents=True. Patch by +Armin Rigo. +.. +.. bpo: 29692 +.. date: 0278 +.. nonce: oyWrAE +.. section: Library +Fixed arbitrary unchaining of RuntimeError exceptions in +contextlib.contextmanager. Patch by Siddharth Velankar. +.. +.. bpo: 26187 +.. date: 0277 +.. nonce: aViyiR +.. section: Library +Test that sqlite3 trace callback is not called multiple times when schema is +changing. Indirectly fixed by switching to use sqlite3_prepare_v2() in +bpo-9303. Patch by Aviv Palivoda. +.. +.. bpo: 30017 +.. date: 0276 +.. nonce: cKBuhU +.. section: Library +Allowed calling the close() method of the zip entry writer object multiple +times. Writing to a closed writer now always produces a ValueError. +.. +.. bpo: 29998 +.. date: 0275 +.. nonce: poeIKD +.. section: Library +Pickling and copying ImportError now preserves name and path attributes. +.. +.. bpo: 29995 +.. date: 0274 +.. nonce: b3mOqx +.. section: Library +re.escape() now escapes only regex special characters. +.. +.. bpo: 29962 +.. date: 0273 +.. nonce: r-ibsN +.. section: Library +Add math.remainder operation, implementing remainder as specified in IEEE +754. +.. +.. bpo: 29649 +.. date: 0272 +.. nonce: 2eIxQ8 +.. section: Library +Improve struct.pack_into() exception messages for problems with the buffer +size and offset. Patch by Andrew Nester. +.. +.. bpo: 29654 +.. date: 0271 +.. nonce: xRFPge +.. section: Library +Support If-Modified-Since HTTP header (browser cache). Patch by Pierre +Quentel. +.. +.. bpo: 29931 +.. date: 0270 +.. nonce: tfcTwK +.. section: Library +Fixed comparison check for ipaddress.ip_interface objects. Patch by Sanjay +Sundaresan. +.. +.. bpo: 29953 +.. date: 0269 +.. nonce: Q1hSt- +.. section: Library +Fixed memory leaks in the replace() method of datetime and time objects when +pass out of bound fold argument. +.. +.. bpo: 29942 +.. date: 0268 +.. nonce: CsGNuT +.. section: Library +Fix a crash in itertools.chain.from_iterable when encountering long runs of +empty iterables. +.. +.. bpo: 10030 +.. date: 0267 +.. nonce: ZdhU3k +.. section: Library +Sped up reading encrypted ZIP files by 2 times. +.. +.. bpo: 29204 +.. date: 0266 +.. nonce: 8Hbqn2 +.. section: Library +Element.getiterator() and the html parameter of XMLParser() were deprecated +only in the documentation (since Python 3.2 and 3.4 correspondingly). Now +using them emits a deprecation warning. +.. +.. bpo: 27863 +.. date: 0265 +.. nonce: pPYHHI +.. section: Library +Fixed multiple crashes in ElementTree caused by race conditions and wrong +types. +.. +.. bpo: 25996 +.. date: 0264 +.. nonce: L2_giP +.. section: Library +Added support of file descriptors in os.scandir() on Unix. os.fwalk() is +sped up by 2 times by using os.scandir(). +.. +.. bpo: 28699 +.. date: 0263 +.. nonce: wZztZP +.. section: Library +Fixed a bug in pools in multiprocessing.pool that raising an exception at +the very first of an iterable may swallow the exception or make the program +hang. Patch by Davin Potts and Xiang Zhang. +.. +.. bpo: 23890 +.. date: 0262 +.. nonce: GCFAAZ +.. section: Library +unittest.TestCase.assertRaises() now manually breaks a reference cycle to +not keep objects alive longer than expected. +.. +.. bpo: 29901 +.. date: 0261 +.. nonce: QdgMvW +.. section: Library +The zipapp module now supports general path-like objects, not just +pathlib.Path. +.. +.. bpo: 25803 +.. date: 0260 +.. nonce: CPDR0W +.. section: Library +Avoid incorrect errors raised by Path.mkdir(exist_ok=True) when the OS gives +priority to errors such as EACCES over EEXIST. +.. +.. bpo: 29861 +.. date: 0259 +.. nonce: t2ZoRK +.. section: Library +Release references to tasks, their arguments and their results as soon as +they are finished in multiprocessing.Pool. +.. +.. bpo: 19930 +.. date: 0258 +.. nonce: QCjO6A +.. section: Library +The mode argument of os.makedirs() no longer affects the file permission +bits of newly created intermediate-level directories. +.. +.. bpo: 29884 +.. date: 0257 +.. nonce: kWXR8W +.. section: Library +faulthandler: Restore the old sigaltstack during teardown. Patch by +Christophe Zeitouny. +.. +.. bpo: 25455 +.. date: 0256 +.. nonce: ZsahHN +.. section: Library +Fixed crashes in repr of recursive buffered file-like objects. +.. +.. bpo: 29800 +.. date: 0255 +.. nonce: d2xASa +.. section: Library +Fix crashes in partial.__repr__ if the keys of partial.keywords are not +strings. Patch by Michael Seifert. +.. +.. bpo: 8256 +.. date: 0254 +.. nonce: jAwGQH +.. section: Library +Fixed possible failing or crashing input() if attributes "encoding" or +"errors" of sys.stdin or sys.stdout are not set or are not strings. +.. +.. bpo: 28692 +.. date: 0253 +.. nonce: CDt-Gb +.. section: Library +Using non-integer value for selecting a plural form in gettext is now +deprecated. +.. +.. bpo: 26121 +.. date: 0252 +.. nonce: LX-pQA +.. section: Library +Use C library implementation for math functions erf() and erfc(). +.. +.. bpo: 29619 +.. date: 0251 +.. nonce: WIGVxO +.. section: Library +os.stat() and os.DirEntry.inode() now convert inode (st_ino) using unsigned +integers. +.. +.. bpo: 28298 +.. date: 0250 +.. nonce: PNOPsT +.. section: Library +Fix a bug that prevented array 'Q', 'L' and 'I' from accepting big intables +(objects that have __int__) as elements. +.. +.. bpo: 29645 +.. date: 0249 +.. nonce: XCxTHM +.. section: Library +Speed up importing the webbrowser module. webbrowser.register() is now +thread-safe. +.. +.. bpo: 28231 +.. date: 0248 +.. nonce: MG1X09 +.. section: Library +The zipfile module now accepts path-like objects for external paths. +.. +.. bpo: 26915 +.. date: 0247 +.. nonce: qShJZO +.. section: Library +index() and count() methods of collections.abc.Sequence now check identity +before checking equality when do comparisons. +.. +.. bpo: 28682 +.. date: 0246 +.. nonce: hUxdej +.. section: Library +Added support for bytes paths in os.fwalk(). +.. +.. bpo: 29728 +.. date: 0245 +.. nonce: 37jMwb +.. section: Library +Add new :const:`socket.TCP_NOTSENT_LOWAT` (Linux 3.12) constant. Patch by +Nathaniel J. Smith. +.. +.. bpo: 29623 +.. date: 0244 +.. nonce: D3-NP2 +.. section: Library +Allow use of path-like object as a single argument in ConfigParser.read(). +Patch by David Ellis. +.. +.. bpo: 9303 +.. date: 0243 +.. nonce: kDZRSd +.. section: Library +Migrate sqlite3 module to _v2 API. Patch by Aviv Palivoda. +.. +.. bpo: 28963 +.. date: 0242 +.. nonce: tPl8dq +.. section: Library +Fix out of bound iteration in asyncio.Future.remove_done_callback +implemented in C. +.. +.. bpo: 29704 +.. date: 0241 +.. nonce: WHbx27 +.. section: Library +asyncio.subprocess.SubprocessStreamProtocol no longer closes before all +pipes are closed. +.. +.. bpo: 29271 +.. date: 0240 +.. nonce: y8Vj2v +.. section: Library +Fix Task.current_task and Task.all_tasks implemented in C to accept None +argument as their pure Python implementation. +.. +.. bpo: 29703 +.. date: 0239 +.. nonce: ZdsPCR +.. section: Library +Fix asyncio to support instantiation of new event loops in child processes. +.. +.. bpo: 29615 +.. date: 0238 +.. nonce: OpFKzg +.. section: Library +SimpleXMLRPCDispatcher no longer chains KeyError (or any other exception) to +exception(s) raised in the dispatched methods. Patch by Petr Motejlek. +.. +.. bpo: 7769 +.. date: 0237 +.. nonce: xGRJWh +.. section: Library +Method register_function() of xmlrpc.server.SimpleXMLRPCDispatcher and its +subclasses can now be used as a decorator. +.. +.. bpo: 29376 +.. date: 0236 +.. nonce: rrJhJy +.. section: Library +Fix assertion error in threading._DummyThread.is_alive(). +.. +.. bpo: 28624 +.. date: 0235 +.. nonce: 43TJib +.. section: Library +Add a test that checks that cwd parameter of Popen() accepts PathLike +objects. Patch by Sayan Chowdhury. +.. +.. bpo: 28518 +.. date: 0234 +.. nonce: o-Q2Nw +.. section: Library +Start a transaction implicitly before a DML statement. Patch by Aviv +Palivoda. +.. +.. bpo: 29742 +.. date: 0233 +.. nonce: 8hqfEO +.. section: Library +get_extra_info() raises exception if get called on closed ssl transport. +Patch by Nikolay Kim. +.. +.. bpo: 16285 +.. date: 0232 +.. nonce: 4f5gbp +.. section: Library +urllib.parse.quote is now based on RFC 3986 and hence includes '~' in the +set of characters that is not quoted by default. Patch by Christian Theune +and Ratnadeep Debnath. +.. +.. bpo: 29532 +.. date: 0231 +.. nonce: YCwVQn +.. section: Library +Altering a kwarg dictionary passed to functools.partial() no longer affects +a partial object after creation. +.. +.. bpo: 29110 +.. date: 0230 +.. nonce: wmE-_T +.. section: Library +Fix file object leak in aifc.open() when file is given as a filesystem path +and is not in valid AIFF format. Patch by Anthony Zhang. +.. +.. bpo: 22807 +.. date: 0229 +.. nonce: VmoSkZ +.. section: Library +Add uuid.SafeUUID and uuid.UUID.is_safe to relay information from the +platform about whether generated UUIDs are generated with a multiprocessing +safe method. +.. +.. bpo: 29576 +.. date: 0228 +.. nonce: F-b8_5 +.. section: Library +Improve some deprecations in importlib. Some deprecated methods now emit +DeprecationWarnings and have better descriptive messages. +.. +.. bpo: 29534 +.. date: 0227 +.. nonce: Ug3HPU +.. section: Library +Fixed different behaviour of Decimal.from_float() for _decimal and +_pydecimal. Thanks Andrew Nester. +.. +.. bpo: 10379 +.. date: 0226 +.. nonce: mRlZsT +.. section: Library +locale.format_string now supports the 'monetary' keyword argument, and +locale.format is deprecated. +.. +.. bpo: 29851 +.. date: 0225 +.. nonce: jqs_5s +.. section: Library +importlib.reload() now raises ModuleNotFoundError if the module lacks a +spec. +.. +.. bpo: 28556 +.. date: 0224 +.. nonce: p6967e +.. section: Library +Various updates to typing module: typing.Counter, typing.ChainMap, improved +ABC caching, etc. Original PRs by Jelle Zijlstra, Ivan Levkivskyi, Manuel +Krebber, and Łukasz Langa. +.. +.. bpo: 29100 +.. date: 0223 +.. nonce: LAAERS +.. section: Library +Fix datetime.fromtimestamp() regression introduced in Python 3.6.0: check +minimum and maximum years. +.. +.. bpo: 29416 +.. date: 0222 +.. nonce: KJGyI_ +.. section: Library +Prevent infinite loop in pathlib.Path.mkdir +.. +.. bpo: 29444 +.. date: 0221 +.. nonce: cEwgmk +.. section: Library +Fixed out-of-bounds buffer access in the group() method of the match object. +Based on patch by WGH. +.. +.. bpo: 29377 +.. date: 0220 +.. nonce: 4AvSrC +.. section: Library +Add WrapperDescriptorType, MethodWrapperType, and MethodDescriptorType +built-in types to types module. Original patch by Manuel Krebber. +.. +.. bpo: 29218 +.. date: 0219 +.. nonce: -Qoti0 +.. section: Library +Unused install_misc command is now removed. It has been documented as +unused since 2000. Patch by Eric N. Vander Weele. +.. +.. bpo: 29368 +.. date: 0218 +.. nonce: nTtA_V +.. section: Library +The extend() method is now called instead of the append() method when +unpickle collections.deque and other list-like objects. This can speed up +unpickling to 2 times. +.. +.. bpo: 29338 +.. date: 0217 +.. nonce: EpvQJl +.. section: Library +The help of a builtin or extension class now includes the constructor +signature if __text_signature__ is provided for the class. +.. +.. bpo: 29335 +.. date: 0216 +.. nonce: _KC7IK +.. section: Library +Fix subprocess.Popen.wait() when the child process has exited to a stopped +instead of terminated state (ex: when under ptrace). +.. +.. bpo: 29290 +.. date: 0215 +.. nonce: XBqptF +.. section: Library +Fix a regression in argparse that help messages would wrap at non-breaking +spaces. +.. +.. bpo: 28735 +.. date: 0214 +.. nonce: admHLO +.. section: Library +Fixed the comparison of mock.MagickMock with mock.ANY. +.. +.. bpo: 29197 +.. date: 0213 +.. nonce: sZssFZ +.. section: Library +Removed deprecated function ntpath.splitunc(). +.. +.. bpo: 29210 +.. date: 0212 +.. nonce: y1UHWf +.. section: Library +Removed support of deprecated argument "exclude" in tarfile.TarFile.add(). +.. +.. bpo: 29219 +.. date: 0211 +.. nonce: kxui7t +.. section: Library +Fixed infinite recursion in the repr of uninitialized ctypes.CDLL instances. +.. +.. bpo: 29192 +.. date: 0210 +.. nonce: mY31H8 +.. section: Library +Removed deprecated features in the http.cookies module. +.. +.. bpo: 29193 +.. date: 0209 +.. nonce: CgcjEx +.. section: Library +A format string argument for string.Formatter.format() is now +positional-only. +.. +.. bpo: 29195 +.. date: 0208 +.. nonce: vK5LjU +.. section: Library +Removed support of deprecated undocumented keyword arguments in methods of +regular expression objects. +.. +.. bpo: 28969 +.. date: 0207 +.. nonce: j3HJYO +.. section: Library +Fixed race condition in C implementation of functools.lru_cache. KeyError +could be raised when cached function with full cache was simultaneously +called from different threads with the same uncached arguments. +.. +.. bpo: 20804 +.. date: 0206 +.. nonce: XyZhvi +.. section: Library +The unittest.mock.sentinel attributes now preserve their identity when they +are copied or pickled. +.. +.. bpo: 29142 +.. date: 0205 +.. nonce: xo6kAv +.. section: Library +In urllib.request, suffixes in no_proxy environment variable with leading +dots could match related hostnames again (e.g. .b.c matches a.b.c). Patch by +Milan Oberkirch. +.. +.. bpo: 28961 +.. date: 0204 +.. nonce: Rt93vg +.. section: Library +Fix unittest.mock._Call helper: don't ignore the name parameter anymore. +Patch written by Jiajun Huang. +.. +.. bpo: 15812 +.. date: 0203 +.. nonce: R1U-Ec +.. section: Library +inspect.getframeinfo() now correctly shows the first line of a context. +Patch by Sam Breese. +.. +.. bpo: 28985 +.. date: 0202 +.. nonce: TMWJFg +.. section: Library +Update authorizer constants in sqlite3 module. Patch by Dingyuan Wang. +.. +.. bpo: 29079 +.. date: 0201 +.. nonce: g4YLix +.. section: Library +Prevent infinite loop in pathlib.resolve() on Windows +.. +.. bpo: 13051 +.. date: 0200 +.. nonce: YzC1Te +.. section: Library +Fixed recursion errors in large or resized curses.textpad.Textbox. Based on +patch by Tycho Andersen. +.. +.. bpo: 9770 +.. date: 0199 +.. nonce: WJJnwP +.. section: Library +curses.ascii predicates now work correctly with negative integers. +.. +.. bpo: 28427 +.. date: 0198 +.. nonce: vUd-va +.. section: Library +old keys should not remove new values from WeakValueDictionary when +collecting from another thread. +.. +.. bpo: 28923 +.. date: 0197 +.. nonce: naVULD +.. section: Library +Remove editor artifacts from Tix.py. +.. +.. bpo: 28871 +.. date: 0196 +.. nonce: cPMXCJ +.. section: Library +Fixed a crash when deallocate deep ElementTree. +.. +.. bpo: 19542 +.. date: 0195 +.. nonce: 5tCkaK +.. section: Library +Fix bugs in WeakValueDictionary.setdefault() and WeakValueDictionary.pop() +when a GC collection happens in another thread. +.. +.. bpo: 20191 +.. date: 0194 +.. nonce: Q7uZCS +.. section: Library +Fixed a crash in resource.prlimit() when passing a sequence that doesn't own +its elements as limits. +.. +.. bpo: 16255 +.. date: 0193 +.. nonce: p2YA85 +.. section: Library +subprocess.Popen uses /system/bin/sh on Android as the shell, instead of +/bin/sh. +.. +.. bpo: 28779 +.. date: 0192 +.. nonce: t-mjED +.. section: Library +multiprocessing.set_forkserver_preload() would crash the forkserver process +if a preloaded module instantiated some multiprocessing objects such as +locks. +.. +.. bpo: 26937 +.. date: 0191 +.. nonce: c9kgiA +.. section: Library +The chown() method of the tarfile.TarFile class does not fail now when the +grp module cannot be imported, as for example on Android platforms. +.. +.. bpo: 28847 +.. date: 0190 +.. nonce: GiWd9w +.. section: Library +dbm.dumb now supports reading read-only files and no longer writes the index +file when it is not changed. A deprecation warning is now emitted if the +index file is missed and recreated in the 'r' and 'w' modes (will be an +error in future Python releases). +.. +.. bpo: 27030 +.. date: 0189 +.. nonce: GoGlFH +.. section: Library +Unknown escapes consisting of ``'\'`` and an ASCII letter in re.sub() +replacement templates regular expressions now are errors. +.. +.. bpo: 28835 +.. date: 0188 +.. nonce: iWBYH7 +.. section: Library +Fix a regression introduced in warnings.catch_warnings(): call +warnings.showwarning() if it was overridden inside the context manager. +.. +.. bpo: 27172 +.. date: 0187 +.. nonce: mVKfLT +.. section: Library +To assist with upgrades from 2.7, the previously documented deprecation of +``inspect.getfullargspec()`` has been reversed. This decision may be +revisited again after the Python 2.7 branch is no longer officially +supported. +.. +.. bpo: 28740 +.. date: 0186 +.. nonce: rY8kz- +.. section: Library +Add sys.getandroidapilevel(): return the build time API version of Android +as an integer. Function only available on Android. +.. +.. bpo: 26273 +.. date: 0185 +.. nonce: ilNIWN +.. section: Library +Add new :const:`socket.TCP_CONGESTION` (Linux 2.6.13) and +:const:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by +Omar Sandoval. +.. +.. bpo: 28752 +.. date: 0184 +.. nonce: Q-4oRE +.. section: Library +Restored the __reduce__() methods of datetime objects. +.. +.. bpo: 28727 +.. date: 0183 +.. nonce: ubZP_b +.. section: Library +Regular expression patterns, _sre.SRE_Pattern objects created by +re.compile(), become comparable (only x==y and x!=y operators). This change +should fix the issue #18383: don't duplicate warning filters when the +warnings module is reloaded (thing usually only done in unit tests). +.. +.. bpo: 20572 +.. date: 0182 +.. nonce: NCRmvz +.. section: Library +Remove the subprocess.Popen.wait endtime parameter. It was deprecated in +3.4 and undocumented prior to that. +.. +.. bpo: 25659 +.. date: 0181 +.. nonce: lE2IlT +.. section: Library +In ctypes, prevent a crash calling the from_buffer() and from_buffer_copy() +methods on abstract classes like Array. +.. +.. bpo: 28548 +.. date: 0180 +.. nonce: IeNrnG +.. section: Library +In the "http.server" module, parse the protocol version if possible, to +avoid using HTTP 0.9 in some error responses. +.. +.. bpo: 19717 +.. date: 0179 +.. nonce: HXCAIz +.. section: Library +Makes Path.resolve() succeed on paths that do not exist. Patch by Vajrasky +Kok +.. +.. bpo: 28563 +.. date: 0178 +.. nonce: iweEiw +.. section: Library +Fixed possible DoS and arbitrary code execution when handle plural form +selections in the gettext module. The expression parser now supports exact +syntax supported by GNU gettext. +.. +.. bpo: 28387 +.. date: 0177 +.. nonce: 1clJu7 +.. section: Library +Fixed possible crash in _io.TextIOWrapper deallocator when the garbage +collector is invoked in other thread. Based on patch by Sebastian Cufre. +.. +.. bpo: 27517 +.. date: 0176 +.. nonce: 1CYM8A +.. section: Library +LZMA compressor and decompressor no longer raise exceptions if given empty +data twice. Patch by Benjamin Fogle. +.. +.. bpo: 28549 +.. date: 0175 +.. nonce: ShnM2y +.. section: Library +Fixed segfault in curses's addch() with ncurses6. +.. +.. bpo: 28449 +.. date: 0174 +.. nonce: 5JK6ES +.. section: Library +tarfile.open() with mode "r" or "r:" now tries to open a tar file with +compression before trying to open it without compression. Otherwise it had +50% chance failed with ignore_zeros=True. +.. +.. bpo: 23262 +.. date: 0173 +.. nonce: 6EVB7N +.. section: Library +The webbrowser module now supports Firefox 36+ and derived browsers. Based +on patch by Oleg Broytman. +.. +.. bpo: 24241 +.. date: 0172 +.. nonce: y7N12p +.. section: Library +The webbrowser in an X environment now prefers using the default browser +directly. Also, the webbrowser register() function now has a documented +'preferred' argument, to specify browsers to be returned by get() with no +arguments. Patch by David Steele +.. +.. bpo: 27939 +.. date: 0171 +.. nonce: mTfADV +.. section: Library +Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused by +representing the scale as float value internally in Tk. tkinter.IntVar now +works if float value is set to underlying Tk variable. +.. +.. bpo: 28255 +.. date: 0170 +.. nonce: G3iOPm +.. section: Library +calendar.TextCalendar.prweek() no longer prints a space after a weeks's +calendar. calendar.TextCalendar.pryear() no longer prints redundant newline +after a year's calendar. Based on patch by Xiang Zhang. +.. +.. bpo: 28255 +.. date: 0169 +.. nonce: fHNZu0 +.. section: Library +calendar.TextCalendar.prmonth() no longer prints a space at the start of new +line after printing a month's calendar. Patch by Xiang Zhang. +.. +.. bpo: 20491 +.. date: 0168 +.. nonce: ObgnQ2 +.. section: Library +The textwrap.TextWrapper class now honors non-breaking spaces. Based on +patch by Kaarle Ritvanen. +.. +.. bpo: 28353 +.. date: 0167 +.. nonce: sKGbLL +.. section: Library +os.fwalk() no longer fails on broken links. +.. +.. bpo: 28430 +.. date: 0166 +.. nonce: 4MiEYT +.. section: Library +Fix iterator of C implemented asyncio.Future doesn't accept non-None value +is passed to it.send(val). +.. +.. bpo: 27025 +.. date: 0165 +.. nonce: foAViS +.. section: Library +Generated names for Tkinter widgets now start by the "!" prefix for +readability. +.. +.. bpo: 25464 +.. date: 0164 +.. nonce: HDUTCu +.. section: Library +Fixed HList.header_exists() in tkinter.tix module by addin a workaround to +Tix library bug. +.. +.. bpo: 28488 +.. date: 0163 +.. nonce: TgO112 +.. section: Library +shutil.make_archive() no longer adds entry "./" to ZIP archive. +.. +.. bpo: 25953 +.. date: 0162 +.. nonce: EKKJAQ +.. section: Library +re.sub() now raises an error for invalid numerical group reference in +replacement template even if the pattern is not found in the string. Error +message for invalid group reference now includes the group index and the +position of the reference. Based on patch by SilentGhost. +.. +.. bpo: 28469 +.. date: 0161 +.. nonce: QZW1Np +.. section: Library +timeit now uses the sequence 1, 2, 5, 10, 20, 50,... instead of 1, 10, +100,... for autoranging. +.. +.. bpo: 28115 +.. date: 0160 +.. nonce: 4FIjIE +.. section: Library +Command-line interface of the zipfile module now uses argparse. Added +support of long options. +.. +.. bpo: 18219 +.. date: 0159 +.. nonce: 1ANQN1 +.. section: Library +Optimize csv.DictWriter for large number of columns. Patch by Mariatta +Wijaya. +.. +.. bpo: 28448 +.. date: 0158 +.. nonce: 5bduWe +.. section: Library +Fix C implemented asyncio.Future didn't work on Windows. +.. +.. bpo: 23214 +.. date: 0157 +.. nonce: -4Q5Z7 +.. section: Library +In the "io" module, the argument to BufferedReader and BytesIO's read1() +methods is now optional and can be -1, matching the BufferedIOBase +specification. +.. +.. bpo: 28480 +.. date: 0156 +.. nonce: 9lHw6m +.. section: Library +Fix error building socket module when multithreading is disabled. +.. +.. bpo: 28240 +.. date: 0155 +.. nonce: hqzQvS +.. section: Library +timeit: remove ``-c/--clock`` and ``-t/--time`` command line options which +were deprecated since Python 3.3. +.. +.. bpo: 28240 +.. date: 0154 +.. nonce: IwQMgd +.. section: Library +timeit now repeats the benchmarks 5 times instead of only 3 to make +benchmarks more reliable. +.. +.. bpo: 28240 +.. date: 0153 +.. nonce: cXljq- +.. section: Library +timeit autorange now uses a single loop iteration if the benchmark takes +less than 10 seconds, instead of 10 iterations. "python3 -m timeit -s +'import time' 'time.sleep(1)'" now takes 4 seconds instead of 40 seconds. +.. +.. bpo: 0 +.. date: 0152 +.. nonce: 5Y0ngw +.. section: Library +Distutils.sdist now looks for README and setup.py files with case +sensitivity. This behavior matches that found in Setuptools 6.0 and later. +See `setuptools 100 `_ for +rationale. +.. +.. bpo: 24452 +.. date: 0151 +.. nonce: pVsjt0 +.. section: Library +Make webbrowser support Chrome on Mac OS X. Patch by Ned Batchelder. +.. +.. bpo: 20766 +.. date: 0150 +.. nonce: 4kvCzx +.. section: Library +Fix references leaked by pdb in the handling of SIGINT handlers. +.. +.. bpo: 27998 +.. date: 0149 +.. nonce: CPhy4H +.. section: Library +Fixed bytes path support in os.scandir() on Windows. Patch by Eryk Sun. +.. +.. bpo: 28317 +.. date: 0148 +.. nonce: LgHleA +.. section: Library +The disassembler now decodes FORMAT_VALUE argument. +.. +.. bpo: 28380 +.. date: 0147 +.. nonce: jKPMzH +.. section: Library +unittest.mock Mock autospec functions now properly support assert_called, +assert_not_called, and assert_called_once. +.. +.. bpo: 28229 +.. date: 0146 +.. nonce: BKAxcS +.. section: Library +lzma module now supports pathlib. +.. +.. bpo: 28321 +.. date: 0145 +.. nonce: bQ-IIX +.. section: Library +Fixed writing non-BMP characters with binary format in plistlib. +.. +.. bpo: 28225 +.. date: 0144 +.. nonce: 6N28nu +.. section: Library +bz2 module now supports pathlib. Initial patch by Ethan Furman. +.. +.. bpo: 28227 +.. date: 0143 +.. nonce: 7lUz8i +.. section: Library +gzip now supports pathlib. Patch by Ethan Furman. +.. +.. bpo: 28332 +.. date: 0142 +.. nonce: Ed8fNk +.. section: Library +Deprecated silent truncations in socket.htons and socket.ntohs. Original +patch by Oren Milman. +.. +.. bpo: 27358 +.. date: 0141 +.. nonce: t288Iv +.. section: Library +Optimized merging var-keyword arguments and improved error message when +passing a non-mapping as a var-keyword argument. +.. +.. bpo: 28257 +.. date: 0140 +.. nonce: SVD_IH +.. section: Library +Improved error message when passing a non-iterable as a var-positional +argument. Added opcode BUILD_TUPLE_UNPACK_WITH_CALL. +.. +.. bpo: 28322 +.. date: 0139 +.. nonce: l9hzap +.. section: Library +Fixed possible crashes when unpickle itertools objects from incorrect pickle +data. Based on patch by John Leitch. +.. +.. bpo: 28228 +.. date: 0138 +.. nonce: 1qBwdM +.. section: Library +imghdr now supports pathlib. +.. +.. bpo: 28226 +.. date: 0137 +.. nonce: nMXiwU +.. section: Library +compileall now supports pathlib. +.. +.. bpo: 28314 +.. date: 0136 +.. nonce: N7YrkN +.. section: Library +Fix function declaration (C flags) for the getiterator() method of +xml.etree.ElementTree.Element. +.. +.. bpo: 28148 +.. date: 0135 +.. nonce: Flzndx +.. section: Library +Stop using localtime() and gmtime() in the time module. +Introduced platform independent _PyTime_localtime API that is similar to +POSIX localtime_r, but available on all platforms. Patch by Ed Schouten. +.. +.. bpo: 28253 +.. date: 0134 +.. nonce: aLfmhe +.. section: Library +Fixed calendar functions for extreme months: 0001-01 and 9999-12. +Methods itermonthdays() and itermonthdays2() are reimplemented so that they +don't call itermonthdates() which can cause datetime.date under/overflow. +.. +.. bpo: 28275 +.. date: 0133 +.. nonce: EhWIsz +.. section: Library +Fixed possible use after free in the decompress() methods of the +LZMADecompressor and BZ2Decompressor classes. Original patch by John Leitch. +.. +.. bpo: 27897 +.. date: 0132 +.. nonce: I0Ppmx +.. section: Library +Fixed possible crash in sqlite3.Connection.create_collation() if pass +invalid string-like object as a name. Patch by Xiang Zhang. +.. +.. bpo: 18844 +.. date: 0131 +.. nonce: fQsEdn +.. section: Library +random.choices() now has k as a keyword-only argument to improve the +readability of common cases and come into line with the signature used in +other languages. +.. +.. bpo: 18893 +.. date: 0130 +.. nonce: osiX5c +.. section: Library +Fix invalid exception handling in Lib/ctypes/macholib/dyld.py. Patch by +Madison May. +.. +.. bpo: 27611 +.. date: 0129 +.. nonce: A_ArH_ +.. section: Library +Fixed support of default root window in the tkinter.tix module. Added the +master parameter in the DisplayStyle constructor. +.. +.. bpo: 27348 +.. date: 0128 +.. nonce: tDx7Vw +.. section: Library +In the traceback module, restore the formatting of exception messages like +"Exception: None". This fixes a regression introduced in 3.5a2. +.. +.. bpo: 25651 +.. date: 0127 +.. nonce: 3UhyPo +.. section: Library +Allow false values to be used for msg parameter of subTest(). +.. +.. bpo: 27778 +.. date: 0126 +.. nonce: Yyo1aP +.. section: Library +Fix a memory leak in os.getrandom() when the getrandom() is interrupted by a +signal and a signal handler raises a Python exception. +.. +.. bpo: 28200 +.. date: 0125 +.. nonce: 4IEbr7 +.. section: Library +Fix memory leak on Windows in the os module (fix path_converter() function). +.. +.. bpo: 25400 +.. date: 0124 +.. nonce: d9Qn0E +.. section: Library +RobotFileParser now correctly returns default values for crawl_delay and +request_rate. Initial patch by Peter Wirtz. +.. +.. bpo: 27932 +.. date: 0123 +.. nonce: mtgl-6 +.. section: Library +Prevent memory leak in win32_ver(). +.. +.. bpo: 0 +.. date: 0122 +.. nonce: iPpjqX +.. section: Library +Fix UnboundLocalError in socket._sendfile_use_sendfile. +.. +.. bpo: 28075 +.. date: 0121 +.. nonce: aLiUs9 +.. section: Library +Check for ERROR_ACCESS_DENIED in Windows implementation of os.stat(). Patch +by Eryk Sun. +.. +.. bpo: 22493 +.. date: 0120 +.. nonce: Mv_hZf +.. section: Library +Warning message emitted by using inline flags in the middle of regular +expression now contains a (truncated) regex pattern. Patch by Tim Graham. +.. +.. bpo: 25270 +.. date: 0119 +.. nonce: jrZruM +.. section: Library +Prevent codecs.escape_encode() from raising SystemError when an empty +bytestring is passed. +.. +.. bpo: 28181 +.. date: 0118 +.. nonce: NGc4Yv +.. section: Library +Get antigravity over HTTPS. Patch by Kaartic Sivaraam. +.. +.. bpo: 25895 +.. date: 0117 +.. nonce: j92qoQ +.. section: Library +Enable WebSocket URL schemes in urllib.parse.urljoin. Patch by Gergely Imreh +and Markus Holtermann. +.. +.. bpo: 28114 +.. date: 0116 +.. nonce: gmFXsA +.. section: Library +Fix a crash in parse_envlist() when env contains byte strings. Patch by Eryk +Sun. +.. +.. bpo: 27599 +.. date: 0115 +.. nonce: itvm8T +.. section: Library +Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp(). +.. +.. bpo: 27906 +.. date: 0114 +.. nonce: TBBXrv +.. section: Library +Fix socket accept exhaustion during high TCP traffic. Patch by Kevin Conway. +.. +.. bpo: 28174 +.. date: 0113 +.. nonce: CV1UdI +.. section: Library +Handle when SO_REUSEPORT isn't properly supported. Patch by Seth Michael +Larson. +.. +.. bpo: 26654 +.. date: 0112 +.. nonce: XtzTE9 +.. section: Library +Inspect functools.partial in asyncio.Handle.__repr__. Patch by iceboy. +.. +.. bpo: 26909 +.. date: 0111 +.. nonce: ASiakT +.. section: Library +Fix slow pipes IO in asyncio. Patch by INADA Naoki. +.. +.. bpo: 28176 +.. date: 0110 +.. nonce: sU8R6L +.. section: Library +Fix callbacks race in asyncio.SelectorLoop.sock_connect. +.. +.. bpo: 27759 +.. date: 0109 +.. nonce: qpMDGq +.. section: Library +Fix selectors incorrectly retain invalid file descriptors. Patch by Mark +Williams. +.. +.. bpo: 28325 +.. date: 0108 +.. nonce: wAHmnK +.. section: Library +Remove vestigial MacOS 9 macurl2path module and its tests. +.. +.. bpo: 28368 +.. date: 0107 +.. nonce: n594X4 +.. section: Library +Refuse monitoring processes if the child watcher has no loop attached. Patch +by Vincent Michel. +.. +.. bpo: 28369 +.. date: 0106 +.. nonce: 8DTANe +.. section: Library +Raise RuntimeError when transport's FD is used with add_reader, add_writer, +etc. +.. +.. bpo: 28370 +.. date: 0105 +.. nonce: 18jBuZ +.. section: Library +Speedup asyncio.StreamReader.readexactly. Patch by Коренберг Марк. +.. +.. bpo: 28371 +.. date: 0104 +.. nonce: U9Zqdk +.. section: Library +Deprecate passing asyncio.Handles to run_in_executor. +.. +.. bpo: 28372 +.. date: 0103 +.. nonce: njcIPk +.. section: Library +Fix asyncio to support formatting of non-python coroutines. +.. +.. bpo: 28399 +.. date: 0102 +.. nonce: QKIqRX +.. section: Library +Remove UNIX socket from FS before binding. Patch by Коренберг Марк. +.. +.. bpo: 27972 +.. date: 0101 +.. nonce: ZK-GFm +.. section: Library +Prohibit Tasks to await on themselves. +.. +.. bpo: 24142 +.. date: 0100 +.. nonce: IrZnFs +.. section: Library +Reading a corrupt config file left configparser in an invalid state. +Original patch by Florian Höch. +.. +.. bpo: 29581 +.. date: 0099 +.. nonce: gHCrxP +.. section: Library +ABCMeta.__new__ now accepts ``**kwargs``, allowing abstract base classes to +use keyword parameters in __init_subclass__. Patch by Nate Soares. +.. +.. bpo: 25532 +.. date: 0098 +.. nonce: ey4Yez +.. section: Library +inspect.unwrap() will now only try to unwrap an object +sys.getrecursionlimit() times, to protect against objects which create a new +object on every attribute access. +.. +.. bpo: 30177 +.. date: 0097 +.. nonce: JGIJNL +.. section: Library +path.resolve(strict=False) no longer cuts the path after the first element +not present in the filesystem. Patch by Antoine Pietri. +.. +.. bpo: 31294 +.. date: 2017-09-07-20-49-09 +.. nonce: WgI18w +.. section: Documentation +Fix incomplete code snippet in the ZeroMQSocketListener and +ZeroMQSocketHandler examples and adapt them to Python 3. +.. +.. bpo: 21649 +.. date: 2017-09-06-10-11-57 +.. nonce: EUvqA9 +.. section: Documentation +Add RFC 7525 and Mozilla server side TLS links to SSL documentation. +.. +.. bpo: 31128 +.. date: 2017-08-31 +.. nonce: uoa3cr +.. section: Documentation +Allow the pydoc server to bind to arbitrary hostnames. +.. +.. bpo: 30803 +.. date: 2017-07-29-14-55-50 +.. nonce: 6hutqQ +.. section: Documentation +Clarify doc on truth value testing. Original patch by Peter Thomassen. +.. +.. bpo: 30176 +.. date: 0060 +.. nonce: VivmCg +.. section: Documentation +Add missing attribute related constants in curses documentation. +.. +.. bpo: 30052 +.. date: 0059 +.. nonce: TpmpaF +.. section: Documentation +the link targets for :func:`bytes` and :func:`bytearray` are now their +respective type definitions, rather than the corresponding builtin function +entries. Use :ref:`bytes ` and :ref:`bytearray ` +to reference the latter. +In order to ensure this and future cross-reference updates are applied +automatically, the daily documentation builds now disable the default output +caching features in Sphinx. +.. +.. bpo: 26985 +.. date: 0058 +.. nonce: NB5_9S +.. section: Documentation +Add missing info of code object in inspect documentation. +.. +.. bpo: 19824 +.. date: 0057 +.. nonce: We9an6 +.. section: Documentation +Improve the documentation for, and links to, template strings by emphasizing +their utility for internationalization, and by clarifying some usage +constraints. (See also: bpo-20314, bpo-12518) +.. +.. bpo: 28929 +.. date: 0056 +.. nonce: Md7kb0 +.. section: Documentation +Link the documentation to its source file on GitHub. +.. +.. bpo: 25008 +.. date: 0055 +.. nonce: CeIzyU +.. section: Documentation +Document smtpd.py as effectively deprecated and add a pointer to aiosmtpd, a +third-party asyncio-based replacement. +.. +.. bpo: 26355 +.. date: 0054 +.. nonce: SDq_8Y +.. section: Documentation +Add canonical header link on each page to corresponding major version of the +documentation. Patch by Matthias Bussonnier. +.. +.. bpo: 29349 +.. date: 0053 +.. nonce: PjSo-t +.. section: Documentation +Fix Python 2 syntax in code for building the documentation. +.. +.. bpo: 23722 +.. date: 0052 +.. nonce: nFjY3C +.. section: Documentation +The data model reference and the porting section in the 3.6 What's New guide +now cover the additional ``__classcell__`` handling needed for custom +metaclasses to fully support :pep:`487` and zero-argument ``super()``. +.. +.. bpo: 28513 +.. date: 0051 +.. nonce: L3joAz +.. section: Documentation +Documented command-line interface of zipfile. +.. +.. bpo: 29639 +.. date: 2017-09-08-15-59-07 +.. nonce: yIZecp +.. section: Tests +test.support.HOST is now "localhost", a new HOSTv4 constant has been added +for your ``127.0.0.1`` needs, similar to the existing HOSTv6 constant. +.. +.. bpo: 31320 +.. date: 2017-09-05-14-23-35 +.. nonce: JRDHx7 +.. section: Tests +Silence traceback in test_ssl +.. +.. bpo: 31346 +.. date: 2017-09-04-16-21-18 +.. nonce: xni1VR +.. section: Tests +Prefer PROTOCOL_TLS_CLIENT and PROTOCOL_TLS_SERVER protocols for SSLContext. +.. +.. bpo: 25674 +.. date: 2017-09-04-13-03-55 +.. nonce: whVTXh +.. section: Tests +Remove sha256.tbs-internet.com ssl test +.. +.. bpo: 30715 +.. date: 2017-07-25-15-27-44 +.. nonce: Sp7bTF +.. section: Tests +Address ALPN callback changes for OpenSSL 1.1.0f. The latest version behaves +like OpenSSL 1.0.2 and no longer aborts handshake. +.. +.. bpo: 30822 +.. date: 2017-07-20-14-29-54 +.. nonce: X0wREo +.. section: Tests +regrtest: Exclude tzdata from regrtest --all. When running the test suite +using --use=all / -u all, exclude tzdata since it makes test_datetime too +slow (15-20 min on some buildbots) which then times out on some buildbots. +Fix also regrtest command line parser to allow passing -u extralargefile to +run test_zipfile64. +.. +.. bpo: 30695 +.. date: 2017-06-30-11-20-20 +.. nonce: lo7FQX +.. section: Tests +Add the ``set_nomemory(start, stop)`` and ``remove_mem_hooks()`` functions to +the ``_testcapi`` module. +.. +.. bpo: 30357 +.. date: 0012 +.. nonce: n4CPEa +.. section: Tests +test_thread: setUp() now uses support.threading_setup() and +support.threading_cleanup() to wait until threads complete to avoid random +side effects on following tests. Initial patch written by Grzegorz Grzywacz. +.. +.. bpo: 30197 +.. date: 0011 +.. nonce: c5wRfu +.. section: Tests +Enhanced functions swap_attr() and swap_item() in the test.support module. +They now work when delete replaced attribute or item inside the with +statement. The old value of the attribute or item (or None if it doesn't +exist) now will be assigned to the target of the "as" clause, if there is +one. +.. +.. bpo: 24932 +.. date: 0010 +.. nonce: XLTzvR +.. section: Tests +Use proper command line parsing in _testembed +.. +.. bpo: 28950 +.. date: 0009 +.. nonce: 1W8Glo +.. section: Tests +Disallow -j0 to be combined with -T/-l in regrtest command line arguments. +.. +.. bpo: 28683 +.. date: 0008 +.. nonce: Fp-Hdq +.. section: Tests +Fix the tests that bind() a unix socket and raise PermissionError on Android +for a non-root user. +.. +.. bpo: 26936 +.. date: 0007 +.. nonce: XSZSVS +.. section: Tests +Fix the test_socket failures on Android - getservbyname(), getservbyport() +and getaddrinfo() are broken on some Android API levels. +.. +.. bpo: 28666 +.. date: 0006 +.. nonce: RtTk-4 +.. section: Tests +Now test.support.rmtree is able to remove unwritable or unreadable +directories. +.. +.. bpo: 23839 +.. date: 0005 +.. nonce: zsT_L9 +.. section: Tests +Various caches now are cleared before running every test file. +.. +.. bpo: 26944 +.. date: 0004 +.. nonce: ChZ_BO +.. section: Tests +Fix test_posix for Android where 'id -G' is entirely wrong or missing the +effective gid. +.. +.. bpo: 28409 +.. date: 0003 +.. nonce: Q2IlxJ +.. section: Tests +regrtest: fix the parser of command line arguments. +.. +.. bpo: 28217 +.. date: 0002 +.. nonce: Y37OKV +.. section: Tests +Adds _testconsole module to test console input. +.. +.. bpo: 26939 +.. date: 0001 +.. nonce: 7j_W5R +.. section: Tests +Add the support.setswitchinterval() function to fix test_functools hanging +on the Android armv7 qemu emulator. +.. +.. bpo: 31354 +.. date: 2017-09-08-11-48-11 +.. nonce: 4f-VJK +.. section: Build +Allow ``--with-lto`` to be used on all builds, not just ``make profile-opt``. +.. +.. bpo: 31370 +.. date: 2017-09-06-23-14-08 +.. nonce: -j4kN4 +.. section: Build +Remove support for building --without-threads. +This option is not really useful anymore in the 21st century. Removing lots +of conditional paths allows us to simplify the code base, including in +difficult to maintain low-level internal code. +.. +.. bpo: 31341 +.. date: 2017-09-04-14-43-46 +.. nonce: XLuZFk +.. section: Build +Per :pep:`11`, support for the IRIX operating system was removed. +.. +.. bpo: 30854 +.. date: 2017-07-05-16-54-59 +.. nonce: sPADRI +.. section: Build +Fix compile error when compiling --without-threads. Patch by Masayuki +Yamamoto. +.. +.. bpo: 30687 +.. date: 0050 +.. nonce: 8mqHnu +.. section: Build +Locate msbuild.exe on Windows when building rather than vcvarsall.bat +.. +.. bpo: 20210 +.. date: 0049 +.. nonce: MN_n-r +.. section: Build +Support the *disabled* marker in Setup files. Extension modules listed after +this marker are not built at all, neither by the Makefile nor by setup.py. +.. +.. bpo: 29941 +.. date: 0048 +.. nonce: ylh45A +.. section: Build +Add ``--with-assertions`` configure flag to explicitly enable C ``assert()`` +checks. Defaults to off. ``--with-pydebug`` implies ``--with-assertions``. +.. +.. bpo: 28787 +.. date: 0047 +.. nonce: vhH_6a +.. section: Build +Fix out-of-tree builds of Python when configured with ``--with--dtrace``. +.. +.. bpo: 29243 +.. date: 0046 +.. nonce: WDK4hT +.. section: Build +Prevent unnecessary rebuilding of Python during ``make test``, ``make +install`` and some other make targets when configured with +``--enable-optimizations``. +.. +.. bpo: 23404 +.. date: 0045 +.. nonce: PdYVWg +.. section: Build +Don't regenerate generated files based on file modification time anymore: +the action is now explicit. Replace ``make touch`` with ``make regen-all``. +.. +.. bpo: 29643 +.. date: 0044 +.. nonce: 4WLIJQ +.. section: Build +Fix ``--enable-optimization`` didn't work. +.. +.. bpo: 27593 +.. date: 0043 +.. nonce: v87xEr +.. section: Build +sys.version and the platform module python_build(), python_branch(), and +python_revision() functions now use git information rather than hg when +building from a repo. +.. +.. bpo: 29572 +.. date: 0042 +.. nonce: iZ1XKK +.. section: Build +Update Windows build and OS X installers to use OpenSSL 1.0.2k. +.. +.. bpo: 27659 +.. date: 0041 +.. nonce: i8UzRC +.. section: Build +Prohibit implicit C function declarations: use +``-Werror=implicit-function-declaration`` when possible (GCC and Clang, +but it depends on the compiler version). Patch written by Chi Hsuan Yen. +.. +.. bpo: 29384 +.. date: 0040 +.. nonce: v3IqBE +.. section: Build +Remove old Be OS helper scripts. +.. +.. bpo: 26851 +.. date: 0039 +.. nonce: R5243g +.. section: Build +Set Android compilation and link flags. +.. +.. bpo: 28768 +.. date: 0038 +.. nonce: b9_a6E +.. section: Build +Fix implicit declaration of function _setmode. Patch by Masayuki Yamamoto +.. +.. bpo: 29080 +.. date: 0037 +.. nonce: b3qLQT +.. section: Build +Removes hard dependency on hg.exe from PCBuild/build.bat +.. +.. bpo: 23903 +.. date: 0036 +.. nonce: JXJ889 +.. section: Build +Added missed names to PC/python3.def. +.. +.. bpo: 28762 +.. date: 0035 +.. nonce: Ru0YN_ +.. section: Build +lockf() is available on Android API level 24, but the F_LOCK macro is not +defined in android-ndk-r13. +.. +.. bpo: 28538 +.. date: 0034 +.. nonce: FqtN7v +.. section: Build +Fix the compilation error that occurs because if_nameindex() is available on +Android API level 24, but the if_nameindex structure is not defined. +.. +.. bpo: 20211 +.. date: 0033 +.. nonce: gpNptI +.. section: Build +Do not add the directory for installing C header files and the directory for +installing object code libraries to the cross compilation search paths. +Original patch by Thomas Petazzoni. +.. +.. bpo: 28849 +.. date: 0032 +.. nonce: AzRRF5 +.. section: Build +Do not define sys.implementation._multiarch on Android. +.. +.. bpo: 10656 +.. date: 0031 +.. nonce: pR8FFU +.. section: Build +Fix out-of-tree building on AIX. Patch by Tristan Carel and Michael +Haubenwallner. +.. +.. bpo: 26359 +.. date: 0030 +.. nonce: CLz6qy +.. section: Build +Rename --with-optimiations to --enable-optimizations. +.. +.. bpo: 28444 +.. date: 0029 +.. nonce: zkc9nT +.. section: Build +Fix missing extensions modules when cross compiling. +.. +.. bpo: 28208 +.. date: 0028 +.. nonce: DtoP1i +.. section: Build +Update Windows build and OS X installers to use SQLite 3.14.2. +.. +.. bpo: 28248 +.. date: 0027 +.. nonce: KY_-en +.. section: Build +Update Windows build and OS X installers to use OpenSSL 1.0.2j. +.. +.. bpo: 21124 +.. date: 0026 +.. nonce: 1bbArU +.. section: Build +Fix building the _struct module on Cygwin by passing ``NULL`` instead of +``&PyType_Type`` to PyVarObject_HEAD_INIT. Patch by Masayuki Yamamoto. +.. +.. bpo: 13756 +.. date: 0025 +.. nonce: sslhpC +.. section: Build +Fix building extensions modules on Cygwin. Patch by Roumen Petrov, based on +original patch by Jason Tishler. +.. +.. bpo: 21085 +.. date: 0024 +.. nonce: 2VvyUF +.. section: Build +Add configure check for siginfo_t.si_band, which Cygwin does not provide. +Patch by Masayuki Yamamoto with review and rebase by Erik Bray. +.. +.. bpo: 28258 +.. date: 0023 +.. nonce: iKtAHd +.. section: Build +Fixed build with Estonian locale (python-config and distclean targets in +Makefile). Patch by Arfrever Frehtes Taifersar Arahesis. +.. +.. bpo: 26661 +.. date: 0022 +.. nonce: Z_HNbs +.. section: Build +setup.py now detects system libffi with multiarch wrapper. +.. +.. bpo: 27979 +.. date: 0021 +.. nonce: fR0KgM +.. section: Build +A full copy of libffi is no longer bundled for use when building _ctypes on +non-OSX UNIX platforms. An installed copy of libffi is now required when +building _ctypes on such platforms. +.. +.. bpo: 15819 +.. date: 0020 +.. nonce: QVDr3E +.. section: Build +Remove redundant include search directory option for building outside the +source tree. +.. +.. bpo: 28676 +.. date: 0019 +.. nonce: Wxf6Ds +.. section: Build +Prevent missing 'getentropy' declaration warning on macOS. Patch by Gareth +Rees. +.. +.. bpo: 31392 +.. date: 2017-09-07-20-09-04 +.. nonce: h92bWF +.. section: Windows +Update Windows build to use OpenSSL 1.1.0f +.. +.. bpo: 30389 +.. date: 2017-09-06-17-14-54 +.. nonce: 9Dizrx +.. section: Windows +Adds detection of Visual Studio 2017 to distutils on Windows. +.. +.. bpo: 31358 +.. date: 2017-09-05-19-46-52 +.. nonce: n1Fjxc +.. section: Windows +zlib is no longer bundled in the CPython source, instead it is downloaded on +demand just like bz2, lzma, OpenSSL, Tcl/Tk, and SQLite. +.. +.. bpo: 31340 +.. date: 2017-09-04-13-19-05 +.. nonce: MbkzLi +.. section: Windows +Change to building with MSVC v141 (included with Visual Studio 2017) +.. +.. bpo: 30581 +.. date: 2017-08-04-10-05-19 +.. nonce: OQhR7l +.. section: Windows +os.cpu_count() now returns the correct number of processors on Windows when +the number of logical processors is greater than 64. +.. +.. bpo: 30916 +.. date: 2017-07-15-00-40-12 +.. nonce: BpCrro +.. section: Windows +Pre-build OpenSSL, Tcl and Tk and include the binaries in the build. +.. +.. bpo: 30731 +.. date: 2017-07-13-11-22-53 +.. nonce: nmMDwI +.. section: Windows +Add a missing xmlns to python.manifest so that it matches the schema. +.. +.. bpo: 30291 +.. date: 2017-06-28-03-20-48 +.. nonce: zBpOl6 +.. section: Windows +Allow requiring 64-bit interpreters from py.exe using -64 suffix. +Contributed by Steve (Gadget) Barnes. +.. +.. bpo: 30362 +.. date: 2017-06-28-03-08-22 +.. nonce: XxeVMB +.. section: Windows +Adds list options (-0, -0p) to py.exe launcher. Contributed by Steve Barnes. +.. +.. bpo: 23451 +.. date: 2017-06-27-07-04-06 +.. nonce: bl_QOB +.. section: Windows +Fix socket deprecation warnings in socketmodule.c. Patch by Segev Finer. +.. +.. bpo: 30450 +.. date: 0088 +.. nonce: qsaK8y +.. section: Windows +The build process on Windows no longer depends on Subversion, instead +pulling external code from GitHub via a Python script. If Python 3.6 is not +found on the system (via ``py -3.6``), NuGet is used to download a copy of +32-bit Python. +.. +.. bpo: 29579 +.. date: 0087 +.. nonce: 07B-FQ +.. section: Windows +Removes readme.txt from the installer. +.. +.. bpo: 25778 +.. date: 0086 +.. nonce: 8uKJ82 +.. section: Windows +winreg does not truncate string correctly (Patch by Eryk Sun) +.. +.. bpo: 28896 +.. date: 0085 +.. nonce: qOcBBL +.. section: Windows +Deprecate WindowsRegistryFinder and disable it by default +.. +.. bpo: 28522 +.. date: 0084 +.. nonce: XHMQa7 +.. section: Windows +Fixes mishandled buffer reallocation in getpathp.c +.. +.. bpo: 28402 +.. date: 0083 +.. nonce: v9zETJ +.. section: Windows +Adds signed catalog files for stdlib on Windows. +.. +.. bpo: 28333 +.. date: 0082 +.. nonce: KnpeO4 +.. section: Windows +Enables Unicode for ps1/ps2 and input() prompts. (Patch by Eryk Sun) +.. +.. bpo: 28251 +.. date: 0081 +.. nonce: tR_AFs +.. section: Windows +Improvements to help manuals on Windows. +.. +.. bpo: 28110 +.. date: 0080 +.. nonce: cnkP5F +.. section: Windows +launcher.msi has different product codes between 32-bit and 64-bit +.. +.. bpo: 28161 +.. date: 0079 +.. nonce: hF91LI +.. section: Windows +Opening CON for write access fails +.. +.. bpo: 28162 +.. date: 0078 +.. nonce: 3FHPVD +.. section: Windows +WindowsConsoleIO readall() fails if first line starts with Ctrl+Z +.. +.. bpo: 28163 +.. date: 0077 +.. nonce: -DUgJw +.. section: Windows +WindowsConsoleIO fileno() passes wrong flags to _open_osfhandle +.. +.. bpo: 28164 +.. date: 0076 +.. nonce: 5MfN0J +.. section: Windows +_PyIO_get_console_type fails for various paths +.. +.. bpo: 28137 +.. date: 0075 +.. nonce: C1uvzY +.. section: Windows +Renames Windows path file to ._pth +.. +.. bpo: 28138 +.. date: 0074 +.. nonce: pNdv64 +.. section: Windows +Windows ._pth file should allow import site +.. +.. bpo: 31493 +.. date: 2017-09-16-23-43-39 +.. nonce: nmHMCR +.. section: IDLE +IDLE code context -- fix code update and font update timers. +Canceling timers prevents a warning message when test_idle completes. +.. +.. bpo: 31488 +.. date: 2017-09-16-01-21-20 +.. nonce: 0rtXIT +.. section: IDLE +IDLE - Update non-key options in former extension classes. When applying +configdialog changes, call .reload for each feature class. Change ParenMatch +so updated options affect existing instances attached to existing editor +windows. +.. +.. bpo: 31477 +.. date: 2017-09-15-12-38-47 +.. nonce: n__6sa +.. section: IDLE +IDLE - Improve rstrip entry in doc. Strip trailing whitespace strips more +than blank spaces. Multiline string literals are not skipped. +.. +.. bpo: 31480 +.. date: 2017-09-14-17-53-53 +.. nonce: 4WJ0pl +.. section: IDLE +IDLE - make tests pass with zzdummy extension disabled by default. +.. +.. bpo: 31421 +.. date: 2017-09-12-08-38-27 +.. nonce: mYfQNq +.. section: IDLE +Document how IDLE runs tkinter programs. IDLE calls tcl/tk update in the +background in order to make live +interaction and experimentation with tkinter applications much easier. +.. +.. bpo: 31414 +.. date: 2017-09-11-15-46-05 +.. nonce: wiepgK +.. section: IDLE +IDLE -- fix tk entry box tests by deleting first. Adding to an int entry is +not the same as deleting and inserting because int('') will fail. +.. +.. bpo: 31051 +.. date: 2017-08-30-00-06-58 +.. nonce: 50Jp_Q +.. section: IDLE +Rearrange IDLE configdialog GenPage into Window, Editor, and Help sections. +.. +.. bpo: 30617 +.. date: 2017-08-27-16-49-36 +.. nonce: UHnswr +.. section: IDLE +IDLE - Add docstrings and tests for outwin subclass of editor. +Move some data and functions from the class to module level. Patch by Cheryl +Sabella. +.. +.. bpo: 31287 +.. date: 2017-08-27-15-31-33 +.. nonce: aZERfI +.. section: IDLE +IDLE - Do not modify tkinter.message in test_configdialog. +.. +.. bpo: 27099 +.. date: 2017-08-24-13-48-16 +.. nonce: rENefC +.. section: IDLE +Convert IDLE's built-in 'extensions' to regular features. +About 10 IDLE features were implemented as supposedly optional extensions. +Their different behavior could be confusing or worse for users and not good +for maintenance. Hence the conversion. +The main difference for users is that user configurable key bindings for +builtin features are now handled uniformly. Now, editing a binding in a +keyset only affects its value in the keyset. All bindings are defined +together in the system-specific default keysets in config-extensions.def. +All custom keysets are saved as a whole in config-extension.cfg. All take +effect as soon as one clicks Apply or Ok. +The affected events are '<>', '<>', +'<>', '<>', '<>', +'<>', '<>', and '<>'. Any (global) +customizations made before 3.6.3 will not affect their keyset-specific +customization after 3.6.3. and vice versa. +Initial patch by Charles Wohlganger. +.. +.. bpo: 31206 +.. date: 2017-08-18-14-13-42 +.. nonce: F1-tKK +.. section: IDLE +IDLE: Factor HighPage(Frame) class from ConfigDialog. Patch by Cheryl +Sabella. +.. +.. bpo: 31001 +.. date: 2017-08-17-15-00-20 +.. nonce: KLxYHC +.. section: IDLE +Add tests for configdialog highlight tab. Patch by Cheryl Sabella. +.. +.. bpo: 31205 +.. date: 2017-08-15-12-58-23 +.. nonce: iuziZ5 +.. section: IDLE +IDLE: Factor KeysPage(Frame) class from ConfigDialog. The slightly modified +tests continue to pass. Patch by Cheryl Sabella. +.. +.. bpo: 31130 +.. date: 2017-08-07-14-02-56 +.. nonce: FbsC7f +.. section: IDLE +IDLE -- stop leaks in test_configdialog. Initial patch by Victor Stinner. +.. +.. bpo: 31002 +.. date: 2017-08-03-17-54-02 +.. nonce: kUSgTE +.. section: IDLE +Add tests for configdialog keys tab. Patch by Cheryl Sabella. +.. +.. bpo: 19903 +.. date: 2017-08-03-14-08-42 +.. nonce: sqE1FS +.. section: IDLE +IDLE: Calltips use ``inspect.signature`` instead of ``inspect.getfullargspec``. +This improves calltips for builtins converted to use Argument Clinic. Patch +by Louie Lu. +.. +.. bpo: 31083 +.. date: 2017-07-31-23-20-51 +.. nonce: 991FXm +.. section: IDLE +IDLE - Add an outline of a TabPage class in configdialog. Update existing +classes to match outline. Initial patch by Cheryl Sabella. +.. +.. bpo: 31050 +.. date: 2017-07-30-17-39-59 +.. nonce: AXR3kP +.. section: IDLE +Factor GenPage(Frame) class from ConfigDialog. The slightly modified tests +continue to pass. Patch by Cheryl Sabella. +.. +.. bpo: 31004 +.. date: 2017-07-30-01-00-58 +.. nonce: m8cc1t +.. section: IDLE +IDLE - Factor FontPage(Frame) class from ConfigDialog. +Slightly modified tests continue to pass. Fix General tests. Patch mostly by +Cheryl Sabella. +.. +.. bpo: 30781 +.. date: 2017-07-28-18-59-06 +.. nonce: ud5m18 +.. section: IDLE +IDLE - Use ttk widgets in ConfigDialog. Patches by Terry Jan Reedy and +Cheryl Sabella. +.. +.. bpo: 31060 +.. date: 2017-07-27-14-48-42 +.. nonce: GdY_VY +.. section: IDLE +IDLE - Finish rearranging methods of ConfigDialog Grouping methods +pertaining to each tab and the buttons will aid writing tests and improving +the tabs and will enable splitting the groups into classes. +.. +.. bpo: 30853 +.. date: 2017-07-27-10-01-14 +.. nonce: enPvvc +.. section: IDLE +IDLE -- Factor a VarTrace class out of ConfigDialog. +Instance tracers manages pairs consisting of a tk variable and a callback +function. When tracing is turned on, setting the variable calls the +function. Test coverage for the new class is 100%. +.. +.. bpo: 31003 +.. date: 2017-07-25-01-28-35 +.. nonce: bYINVH +.. section: IDLE +IDLE: Add more tests for General tab. +.. +.. bpo: 30993 +.. date: 2017-07-22-18-08-41 +.. nonce: 34vJkB +.. section: IDLE +IDLE - Improve configdialog font page and tests. +In configdialog: Document causal pathways in create_font_tab docstring. +Simplify some attribute names. Move set_samples calls to var_changed_font +(idea from Cheryl Sabella). Move related functions to positions after the +create widgets function. +In test_configdialog: Fix test_font_set so not order dependent. Fix renamed +test_indent_scale so it tests the widget. Adjust tests for movement of +set_samples call. Add tests for load functions. Put all font tests in one +class and tab indent tests in another. Except for two lines, these tests +completely cover the related functions. +.. +.. bpo: 30981 +.. date: 2017-07-21-01-55-14 +.. nonce: ZFvQPt +.. section: IDLE +IDLE -- Add more configdialog font page tests. +.. +.. bpo: 28523 +.. date: 2017-07-21-00-54-52 +.. nonce: OPcqYJ +.. section: IDLE +IDLE: replace 'colour' with 'color' in configdialog. +.. +.. bpo: 30917 +.. date: 2017-07-17-23-35-57 +.. nonce: hSiuuO +.. section: IDLE +Add tests for idlelib.config.IdleConf. Increase coverage from 46% to 96%. +Patch by Louie Lu. +.. +.. bpo: 30934 +.. date: 2017-07-15-22-26-57 +.. nonce: BanuSB +.. section: IDLE +Document coverage details for idlelib tests. +Add section to idlelib/idle-test/README.txt. +Include check that branches are taken both ways. +Exclude IDLE-specific code that does not run during unit tests. +.. +.. bpo: 30913 +.. date: 2017-07-13-23-07-33 +.. nonce: aezn_e +.. section: IDLE +IDLE: Document ConfigDialog tk Vars, methods, and widgets in docstrings This +will facilitate improving the dialog and splitting up the class. Original +patch by Cheryl Sabella. +.. +.. bpo: 30899 +.. date: 2017-07-11-02-26-17 +.. nonce: SQmVO8 +.. section: IDLE +IDLE: Add tests for ConfigParser subclasses in config. Patch by Louie Lu. +.. +.. bpo: 30881 +.. date: 2017-07-11-02-21-42 +.. nonce: 4KAq_9 +.. section: IDLE +IDLE: Add docstrings to browser.py. Patch by Cheryl Sabella. +.. +.. bpo: 30851 +.. date: 2017-07-09-23-53-00 +.. nonce: AHXBYa +.. section: IDLE +IDLE: Remove unused variables in configdialog. One is a duplicate, one is +set but cannot be altered by users. Patch by Cheryl Sabella. +.. +.. bpo: 30870 +.. date: 2017-07-08-17-57-04 +.. nonce: IcR2pf +.. section: IDLE +IDLE: In Settings dialog, select font with Up, Down keys as well as mouse. +Initial patch by Louie Lu. +.. +.. bpo: 8231 +.. date: 2017-07-07-21-10-55 +.. nonce: yEge3L +.. section: IDLE +IDLE: call config.IdleConf.GetUserCfgDir only once. +.. +.. bpo: 30779 +.. date: 2017-07-07-20-26-37 +.. nonce: 8KXEXN +.. section: IDLE +IDLE: Factor ConfigChanges class from configdialog, put in config; test. * +In config, put dump test code in a function; run it and unittest in 'if +__name__ == '__main__'. * Add class config.ConfigChanges based on +changes_class_v4.py on bpo issue. * Add class test_config.ChangesTest, +partly using configdialog_tests_v1.py. * Revise configdialog to use +ConfigChanges; see tracker msg297804. * Revise test_configdialog to match +configdialog changes. * Remove configdialog functions unused or moved to +ConfigChanges. Cheryl Sabella contributed parts of the patch. +.. +.. bpo: 30777 +.. date: 2017-07-04-22-45-46 +.. nonce: uxzlMB +.. section: IDLE +IDLE: configdialog - Add docstrings and fix comments. Patch by Cheryl +Sabella. +.. +.. bpo: 30495 +.. date: 2017-06-29-18-23-06 +.. nonce: qIWgc4 +.. section: IDLE +IDLE: Improve textview with docstrings, PEP8 names, and more tests. Patch by +Cheryl Sabella. +.. +.. bpo: 30723 +.. date: 2017-06-27-19-05-40 +.. nonce: rQh06y +.. section: IDLE +IDLE: Make several improvements to parenmatch. Add 'parens' style to +highlight both opener and closer. Make 'default' style, which is not +default, a synonym for 'opener'. Make time-delay work the same with all +styles. Add help for config dialog extensions tab, including help for +parenmatch. Add new tests. Original patch by Charles Wohlganger. +.. +.. bpo: 30674 +.. date: 2017-06-27-01-40-34 +.. nonce: ppK_q8 +.. section: IDLE +IDLE: add docstrings to grep module. Patch by Cheryl Sabella +.. +.. bpo: 21519 +.. date: 2017-06-27-00-29-56 +.. nonce: fTj9T0 +.. section: IDLE +IDLE's basic custom key entry dialog now detects duplicates properly. +Original patch by Saimadhav Heblikar. +.. +.. bpo: 29910 +.. date: 2017-06-26-22-45-27 +.. nonce: mqHh7u +.. section: IDLE +IDLE no longer deletes a character after commenting out a region by a key +shortcut. Add ``return 'break'`` for this and other potential conflicts +between IDLE and default key bindings. +.. +.. bpo: 30728 +.. date: 2017-06-26-15-47-13 +.. nonce: qH4TGL +.. section: IDLE +Review and change idlelib.configdialog names. Lowercase method and attribute +names. Replace 'colour' with 'color', expand overly cryptic names, delete +unneeded underscores. Replace ``import *`` with specific imports. Patches by +Cheryl Sabella. +.. +.. bpo: 6739 +.. date: 2017-06-26-00-28-59 +.. nonce: x5MfhB +.. section: IDLE +IDLE: Verify user-entered key sequences by trying to bind them with tk. Add +tests for all 3 validation functions. Original patch by G Polo. Tests added +by Cheryl Sabella. +.. +.. bpo: 15786 +.. date: 0096 +.. nonce: _XRbaR +.. section: IDLE +Fix several problems with IDLE's autocompletion box. The following should +now work: clicking on selection box items; using the scrollbar; selecting an +item by hitting Return. Hangs on MacOSX should no longer happen. Patch by +Louie Lu. +.. +.. bpo: 25514 +.. date: 0095 +.. nonce: 882pXa +.. section: IDLE +Add doc subsubsection about IDLE failure to start. Popup no-connection +message directs users to this section. +.. +.. bpo: 30642 +.. date: 0094 +.. nonce: 3Zujzt +.. section: IDLE +Fix reference leaks in IDLE tests. Patches by Louie Lu and Terry Jan Reedy. +.. +.. bpo: 30495 +.. date: 0093 +.. nonce: I3i5vL +.. section: IDLE +Add docstrings for textview.py and use PEP8 names. Patches by Cheryl Sabella +and Terry Jan Reedy. +.. +.. bpo: 30290 +.. date: 0092 +.. nonce: fZ3kod +.. section: IDLE +Help-about: use pep8 names and add tests. Increase coverage to 100%. Patches +by Louie Lu, Cheryl Sabella, and Terry Jan Reedy. +.. +.. bpo: 30303 +.. date: 0091 +.. nonce: 2L2F-4 +.. section: IDLE +Add _utest option to textview; add new tests. Increase coverage to 100%. +Patches by Louie Lu and Terry Jan Reedy. +.. +.. bpo: 29071 +.. date: 0090 +.. nonce: FCOpJn +.. section: IDLE +IDLE colors f-string prefixes (but not invalid ur prefixes). +.. +.. bpo: 28572 +.. date: 0089 +.. nonce: 1_duKY +.. section: IDLE +Add 10% to coverage of IDLE's test_configdialog. Update and augment +description of the configuration system. +.. +.. bpo: 30983 +.. date: 2017-08-18-17-19-23 +.. nonce: ggGz9z +.. section: Tools/Demos +gdb integration commands (py-bt, etc.) work on optimized shared builds now, +too. :pep:`523` introduced _PyEval_EvalFrameDefault which inlines +PyEval_EvalFrameEx on non-debug shared builds. This broke the ability to +use py-bt, py-up, and a few other Python-specific gdb integrations. The +problem is fixed by only looking for _PyEval_EvalFrameDefault frames in +python-gdb.py. Original patch by Bruno "Polaco" Penteado. +.. +.. bpo: 29748 +.. date: 0018 +.. nonce: 6pV6s9 +.. section: Tools/Demos +Added the slice index converter in Argument Clinic. +.. +.. bpo: 24037 +.. date: 0017 +.. nonce: KPFC7o +.. section: Tools/Demos +Argument Clinic now uses the converter ``bool(accept={int})`` rather than +``int`` for semantical booleans. This avoids repeating the default value for +Python and C and will help in converting to ``bool`` in future. +.. +.. bpo: 29367 +.. date: 0016 +.. nonce: 4dOKL0 +.. section: Tools/Demos +python-gdb.py now supports also ``method-wrapper`` (``wrapperobject``) +objects. +.. +.. bpo: 28023 +.. date: 0015 +.. nonce: 4gzSGp +.. section: Tools/Demos +Fix python-gdb.py didn't support new dict implementation. +.. +.. bpo: 15369 +.. date: 0014 +.. nonce: bdZ3n- +.. section: Tools/Demos +The pybench and pystone microbenchmark have been removed from Tools. Please +use the new Python benchmark suite https://github.com/python/pyperformance +which is more reliable and includes a portable version of pybench working on +Python 2 and Python 3. +.. +.. bpo: 28102 +.. date: 0013 +.. nonce: 5fKaek +.. section: Tools/Demos +The zipfile module CLI now prints usage to stderr. Patch by Stephen J. +Turnbull. +.. +.. bpo: 31338 +.. date: 2017-09-05-17-51-12 +.. nonce: LjA43Y +.. section: C API +Added the ``Py_UNREACHABLE()`` macro for code paths which are never expected +to be reached. This and a few other useful macros are now documented in the +C API manual. +.. +.. bpo: 30832 +.. date: 2017-07-03-17-25-40 +.. nonce: PcTAEP +.. section: C API +Remove own implementation for thread-local storage. +CPython has provided the own implementation for thread-local storage (TLS) +on Python/thread.c, it's used in the case which a platform has not supplied +native TLS. However, currently all supported platforms (Windows and +pthreads) have provided native TLS and defined the Py_HAVE_NATIVE_TLS macro +with unconditional in any case. +.. +.. bpo: 30708 +.. date: 0073 +.. nonce: np-l1j +.. section: C API +PyUnicode_AsWideCharString() now raises a ValueError if the second argument +is NULL and the wchar_t\* string contains null characters. +.. +.. bpo: 16500 +.. date: 0072 +.. nonce: lRpooa +.. section: C API +Deprecate PyOS_AfterFork() and add PyOS_BeforeFork(), +PyOS_AfterFork_Parent() and PyOS_AfterFork_Child(). +.. +.. bpo: 6532 +.. date: 0071 +.. nonce: qcH6k1 +.. section: C API +The type of results of PyThread_start_new_thread() and +PyThread_get_thread_ident(), and the id parameter of +PyThreadState_SetAsyncExc() changed from "long" to "unsigned long". +.. +.. bpo: 27867 +.. date: 0070 +.. nonce: J-8CGo +.. section: C API +Function PySlice_GetIndicesEx() is deprecated and replaced with a macro if +Py_LIMITED_API is not set or set to the value between 0x03050400 and +0x03060000 (not including) or 0x03060100 or higher. Added functions +PySlice_Unpack() and PySlice_AdjustIndices(). +.. +.. bpo: 29083 +.. date: 0069 +.. nonce: tGTjr_ +.. section: C API +Fixed the declaration of some public API functions. PyArg_VaParse() and +PyArg_VaParseTupleAndKeywords() were not available in limited API. +PyArg_ValidateKeywordArguments(), PyArg_UnpackTuple() and Py_BuildValue() +were not available in limited API of version < 3.3 when PY_SSIZE_T_CLEAN is +defined. +.. +.. bpo: 28769 +.. date: 0068 +.. nonce: Ecmtn8 +.. section: C API +The result of PyUnicode_AsUTF8AndSize() and PyUnicode_AsUTF8() is now of +type ``const char *`` rather of ``char *``. +.. +.. bpo: 29058 +.. date: 0067 +.. nonce: 0wNVP8 +.. section: C API +All stable API extensions added after Python 3.2 are now available only when +Py_LIMITED_API is set to the PY_VERSION_HEX value of the minimum Python +version supporting this API. +.. +.. bpo: 28822 +.. date: 0066 +.. nonce: gMqwvb +.. section: C API +The index parameters *start* and *end* of PyUnicode_FindChar() are now +adjusted to behave like ``str[start:end]``. +.. +.. bpo: 28808 +.. date: 0065 +.. nonce: A03X6r +.. section: C API +PyUnicode_CompareWithASCIIString() now never raises exceptions. +.. +.. bpo: 28761 +.. date: 0064 +.. nonce: iOgCoX +.. section: C API +The fields name and doc of structures PyMemberDef, PyGetSetDef, +PyStructSequence_Field, PyStructSequence_Desc, and wrapperbase are now of +type ``const char *`` rather of ``char *``. +.. +.. bpo: 28748 +.. date: 0063 +.. nonce: AMgb_G +.. section: C API +Private variable _Py_PackageContext is now of type ``const char *`` rather +of ``char *``. +.. +.. bpo: 19569 +.. date: 0062 +.. nonce: IPke0J +.. section: C API +Compiler warnings are now emitted if use most of deprecated functions. +.. +.. bpo: 28426 +.. date: 0061 +.. nonce: zPwvbI +.. section: C API +Deprecated undocumented functions PyUnicode_AsEncodedObject(), +PyUnicode_AsDecodedObject(), PyUnicode_AsDecodedUnicode() and +PyUnicode_AsEncodedUnicode(). + +.. bpo: 23571 +.. date: 8990 +.. nonce: GTkAkq +.. release date: 2015-03-09 +.. section: Core and Builtins +PyObject_Call() and PyCFunction_Call() now raise a SystemError if a function +returns a result and raises an exception. The SystemError is chained to the +previous exception. +.. +.. bpo: 22524 +.. date: 8989 +.. nonce: Ks6_2x +.. section: Library +New os.scandir() function, part of the :pep:`471`: "os.scandir() function -- a +better and faster directory iterator". Patch written by Ben Hoyt. +.. +.. bpo: 23103 +.. date: 8988 +.. nonce: I3RLIV +.. section: Library +Reduced the memory consumption of IPv4Address and IPv6Address. +.. +.. bpo: 21793 +.. date: 8987 +.. nonce: GQtYMM +.. section: Library +BaseHTTPRequestHandler again logs response code as numeric, not as +stringified enum. Patch by Demian Brecht. +.. +.. bpo: 23476 +.. date: 8986 +.. nonce: 82QV9I +.. section: Library +In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST flag on +certificate stores when it is available. +.. +.. bpo: 23576 +.. date: 8985 +.. nonce: 98F-PP +.. section: Library +Avoid stalling in SSL reads when EOF has been reached in the SSL layer but +the underlying connection hasn't been closed. +.. +.. bpo: 23504 +.. date: 8984 +.. nonce: o31h5I +.. section: Library +Added an __all__ to the types module. +.. +.. bpo: 23563 +.. date: 8983 +.. nonce: iQB-ba +.. section: Library +Optimized utility functions in urllib.parse. +.. +.. bpo: 7830 +.. date: 8982 +.. nonce: irvPdC +.. section: Library +Flatten nested functools.partial. +.. +.. bpo: 20204 +.. date: 8981 +.. nonce: DorA4b +.. section: Library +Added the __module__ attribute to _tkinter classes. +.. +.. bpo: 19980 +.. date: 8980 +.. nonce: whwzL_ +.. section: Library +Improved help() for non-recognized strings. help('') now shows the help on +str. help('help') now shows the help on help(). Original patch by Mark +Lawrence. +.. +.. bpo: 23521 +.. date: 8979 +.. nonce: HvwFfd +.. section: Library +Corrected pure python implementation of timedelta division. +Eliminated OverflowError from ``timedelta * float`` for some floats; +Corrected rounding in timedelta true division. +.. +.. bpo: 21619 +.. date: 8978 +.. nonce: uL0SZh +.. section: Library +Popen objects no longer leave a zombie after exit in the with statement if +the pipe was broken. Patch by Martin Panter. +.. +.. bpo: 22936 +.. date: 8977 +.. nonce: JrhGYd +.. section: Library +Make it possible to show local variables in tracebacks for both the +traceback module and unittest. +.. +.. bpo: 15955 +.. date: 8976 +.. nonce: _8nYPy +.. section: Library +Add an option to limit the output size in bz2.decompress(). Patch by +Nikolaus Rath. +.. +.. bpo: 6639 +.. date: 8975 +.. nonce: rmjUmG +.. section: Library +Module-level turtle functions no longer raise TclError after closing the +window. +.. +.. bpo: 814253 +.. date: 8974 +.. nonce: icZb-I +.. section: Library +Group references and conditional group references now work in lookbehind +assertions in regular expressions. (See also: bpo-9179) +.. +.. bpo: 23215 +.. date: 8973 +.. nonce: VHVSVX +.. section: Library +Multibyte codecs with custom error handlers that ignores errors consumed too +much memory and raised SystemError or MemoryError. Original patch by Aleksi +Torhamo. +.. +.. bpo: 5700 +.. date: 8972 +.. nonce: iA5yzL +.. section: Library +io.FileIO() called flush() after closing the file. flush() was not called in +close() if closefd=False. +.. +.. bpo: 23374 +.. date: 8971 +.. nonce: 8A9LuZ +.. section: Library +Fixed pydoc failure with non-ASCII files when stdout encoding differs from +file system encoding (e.g. on Mac OS). +.. +.. bpo: 23481 +.. date: 8970 +.. nonce: ZWwliG +.. section: Library +Remove RC4 from the SSL module's default cipher list. +.. +.. bpo: 21548 +.. date: 8969 +.. nonce: CmO_Yh +.. section: Library +Fix pydoc.synopsis() and pydoc.apropos() on modules with empty docstrings. +.. +.. bpo: 22885 +.. date: 8968 +.. nonce: p8FnYk +.. section: Library +Fixed arbitrary code execution vulnerability in the dbm.dumb module. +Original patch by Claudiu Popa. +.. +.. bpo: 23239 +.. date: 8967 +.. nonce: PGUq7T +.. section: Library +ssl.match_hostname() now supports matching of IP addresses. +.. +.. bpo: 23146 +.. date: 8966 +.. nonce: PW-O3u +.. section: Library +Fix mishandling of absolute Windows paths with forward slashes in pathlib. +.. +.. bpo: 23096 +.. date: 8965 +.. nonce: Ftrmf3 +.. section: Library +Pickle representation of floats with protocol 0 now is the same for both +Python and C implementations. +.. +.. bpo: 19105 +.. date: 8964 +.. nonce: ZK07Ff +.. section: Library +pprint now more efficiently uses free space at the right. +.. +.. bpo: 14910 +.. date: 8963 +.. nonce: zueIhP +.. section: Library +Add allow_abbrev parameter to argparse.ArgumentParser. Patch by Jonathan +Paugh, Steven Bethard, paul j3 and Daniel Eriksson. +.. +.. bpo: 21717 +.. date: 8962 +.. nonce: Knut81 +.. section: Library +tarfile.open() now supports 'x' (exclusive creation) mode. +.. +.. bpo: 23344 +.. date: 8961 +.. nonce: ieu8C1 +.. section: Library +marshal.dumps() is now 20-25% faster on average. +.. +.. bpo: 20416 +.. date: 8960 +.. nonce: cwEgkL +.. section: Library +marshal.dumps() with protocols 3 and 4 is now 40-50% faster on average. +.. +.. bpo: 23421 +.. date: 8959 +.. nonce: eckzoV +.. section: Library +Fixed compression in tarfile CLI. Patch by wdv4758h. +.. +.. bpo: 23367 +.. date: 8958 +.. nonce: kHnFiz +.. section: Library +Fix possible overflows in the unicodedata module. +.. +.. bpo: 23361 +.. date: 8957 +.. nonce: I_w0-z +.. section: Library +Fix possible overflow in Windows subprocess creation code. +.. +.. bpo: 0 +.. date: 8956 +.. nonce: sfmjTs +.. section: Library +logging.handlers.QueueListener now takes a respect_handler_level keyword +argument which, if set to True, will pass messages to handlers taking +handler levels into account. +.. +.. bpo: 19705 +.. date: 8955 +.. nonce: WLzTRV +.. section: Library +turtledemo now has a visual sorting algorithm demo. Original patch from +Jason Yeo. +.. +.. bpo: 23801 +.. date: 8954 +.. nonce: jyJK3z +.. section: Library +Fix issue where cgi.FieldStorage did not always ignore the entire preamble +to a multipart body. +.. +.. bpo: 23445 +.. date: 8953 +.. nonce: 7fmkYO +.. section: Build +pydebug builds now use "gcc -Og" where possible, to make the resulting +executable faster. +.. +.. bpo: 23686 +.. date: 8952 +.. nonce: B7jDXY +.. section: Build +Update OS X 10.5 installer build to use OpenSSL 1.0.2a. +.. +.. bpo: 20204 +.. date: 8951 +.. nonce: M_jcNK +.. section: C API +Deprecation warning is now raised for builtin types without the __module__ +attribute. +.. +.. bpo: 23465 +.. date: 8950 +.. nonce: qBauCy +.. section: Windows +Implement :pep:`486` - Make the Python Launcher aware of virtual environments. +Patch by Paul Moore. +.. +.. bpo: 23437 +.. date: 8949 +.. nonce: ro9X8r +.. section: Windows +Make user scripts directory versioned on Windows. Patch by Paul Moore. + +.. bpo: 28128 +.. date: 9744 +.. nonce: Lc2sFu +.. release date: 2016-10-31 +.. section: Core and Builtins +Deprecation warning for invalid str and byte escape sequences now prints +better information about where the error occurs. Patch by Serhiy Storchaka +and Eric Smith. +.. +.. bpo: 28509 +.. date: 9743 +.. nonce: _Fa4Uq +.. section: Core and Builtins +dict.update() no longer allocate unnecessary large memory. +.. +.. bpo: 28426 +.. date: 9742 +.. nonce: E_quyK +.. section: Core and Builtins +Fixed potential crash in PyUnicode_AsDecodedObject() in debug build. +.. +.. bpo: 28517 +.. date: 9741 +.. nonce: ExPkm9 +.. section: Core and Builtins +Fixed of-by-one error in the peephole optimizer that caused keeping +unreachable code. +.. +.. bpo: 28214 +.. date: 9740 +.. nonce: 6ECJox +.. section: Core and Builtins +Improved exception reporting for problematic __set_name__ attributes. +.. +.. bpo: 23782 +.. date: 9739 +.. nonce: lonDzj +.. section: Core and Builtins +Fixed possible memory leak in _PyTraceback_Add() and exception loss in +PyTraceBack_Here(). +.. +.. bpo: 28471 +.. date: 9738 +.. nonce: Vd5pv7 +.. section: Core and Builtins +Fix "Python memory allocator called without holding the GIL" crash in +socket.setblocking. +.. +.. bpo: 27517 +.. date: 9737 +.. nonce: 1CYM8A +.. section: Library +LZMA compressor and decompressor no longer raise exceptions if given empty +data twice. Patch by Benjamin Fogle. +.. +.. bpo: 28549 +.. date: 9736 +.. nonce: ShnM2y +.. section: Library +Fixed segfault in curses's addch() with ncurses6. +.. +.. bpo: 28449 +.. date: 9735 +.. nonce: 5JK6ES +.. section: Library +tarfile.open() with mode "r" or "r:" now tries to open a tar file with +compression before trying to open it without compression. Otherwise it had +50% chance failed with ignore_zeros=True. +.. +.. bpo: 23262 +.. date: 9734 +.. nonce: 6EVB7N +.. section: Library +The webbrowser module now supports Firefox 36+ and derived browsers. Based +on patch by Oleg Broytman. +.. +.. bpo: 27939 +.. date: 9733 +.. nonce: mTfADV +.. section: Library +Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused by +representing the scale as float value internally in Tk. tkinter.IntVar now +works if float value is set to underlying Tk variable. +.. +.. bpo: 18844 +.. date: 9732 +.. nonce: oif1-H +.. section: Library +The various ways of specifying weights for random.choices() now produce the +same result sequences. +.. +.. bpo: 28255 +.. date: 9731 +.. nonce: _ZH4wm +.. section: Library +calendar.TextCalendar().prmonth() no longer prints a space at the start of +new line after printing a month's calendar. Patch by Xiang Zhang. +.. +.. bpo: 20491 +.. date: 9730 +.. nonce: ObgnQ2 +.. section: Library +The textwrap.TextWrapper class now honors non-breaking spaces. Based on +patch by Kaarle Ritvanen. +.. +.. bpo: 28353 +.. date: 9729 +.. nonce: sKGbLL +.. section: Library +os.fwalk() no longer fails on broken links. +.. +.. bpo: 28430 +.. date: 9728 +.. nonce: 4MiEYT +.. section: Library +Fix iterator of C implemented asyncio.Future doesn't accept non-None value +is passed to it.send(val). +.. +.. bpo: 27025 +.. date: 9727 +.. nonce: foAViS +.. section: Library +Generated names for Tkinter widgets now start by the "!" prefix for +readability. +.. +.. bpo: 25464 +.. date: 9726 +.. nonce: HDUTCu +.. section: Library +Fixed HList.header_exists() in tkinter.tix module by addin a workaround to +Tix library bug. +.. +.. bpo: 28488 +.. date: 9725 +.. nonce: TgO112 +.. section: Library +shutil.make_archive() no longer adds entry "./" to ZIP archive. +.. +.. bpo: 25953 +.. date: 9724 +.. nonce: EKKJAQ +.. section: Library +re.sub() now raises an error for invalid numerical group reference in +replacement template even if the pattern is not found in the string. Error +message for invalid group reference now includes the group index and the +position of the reference. Based on patch by SilentGhost. +.. +.. bpo: 18219 +.. date: 9723 +.. nonce: 1ANQN1 +.. section: Library +Optimize csv.DictWriter for large number of columns. Patch by Mariatta +Wijaya. +.. +.. bpo: 28448 +.. date: 9722 +.. nonce: 5bduWe +.. section: Library +Fix C implemented asyncio.Future didn't work on Windows. +.. +.. bpo: 28480 +.. date: 9721 +.. nonce: 9lHw6m +.. section: Library +Fix error building socket module when multithreading is disabled. +.. +.. bpo: 24452 +.. date: 9720 +.. nonce: m9Kyg3 +.. section: Library +Make webbrowser support Chrome on Mac OS X. +.. +.. bpo: 20766 +.. date: 9719 +.. nonce: 4kvCzx +.. section: Library +Fix references leaked by pdb in the handling of SIGINT handlers. +.. +.. bpo: 28492 +.. date: 9718 +.. nonce: pFRLQE +.. section: Library +Fix how StopIteration exception is raised in _asyncio.Future. +.. +.. bpo: 28500 +.. date: 9717 +.. nonce: NINKzZ +.. section: Library +Fix asyncio to handle async gens GC from another thread. +.. +.. bpo: 26923 +.. date: 9716 +.. nonce: 8dh3AV +.. section: Library +Fix asyncio.Gather to refuse being cancelled once all children are done. +Patch by Johannes Ebke. +.. +.. bpo: 26796 +.. date: 9715 +.. nonce: TZyAfJ +.. section: Library +Don't configure the number of workers for default threadpool executor. +Initial patch by Hans Lawrenz. +.. +.. bpo: 28544 +.. date: 9714 +.. nonce: KD1oFP +.. section: Library +Implement asyncio.Task in C. +.. +.. bpo: 28522 +.. date: 9713 +.. nonce: XHMQa7 +.. section: Windows +Fixes mishandled buffer reallocation in getpathp.c +.. +.. bpo: 28444 +.. date: 9712 +.. nonce: zkc9nT +.. section: Build +Fix missing extensions modules when cross compiling. +.. +.. bpo: 28208 +.. date: 9711 +.. nonce: DtoP1i +.. section: Build +Update Windows build and OS X installers to use SQLite 3.14.2. +.. +.. bpo: 28248 +.. date: 9710 +.. nonce: KY_-en +.. section: Build +Update Windows build and OS X installers to use OpenSSL 1.0.2j. +.. +.. bpo: 26944 +.. date: 9709 +.. nonce: ChZ_BO +.. section: Tests +Fix test_posix for Android where 'id -G' is entirely wrong or missing the +effective gid. +.. +.. bpo: 28409 +.. date: 9708 +.. nonce: Q2IlxJ +.. section: Tests +regrtest: fix the parser of command line arguments. + +.. bpo: 38945 +.. date: 2019-12-01-22-44-40 +.. nonce: ztmNXc +.. release date: 2019-12-18 +.. section: Security +Newline characters have been escaped when performing uu encoding to prevent +them from overflowing into to content section of the encoded file. This +prevents malicious or accidental modification of data during the decoding +process. +.. +.. bpo: 37228 +.. date: 2019-11-21-21-36-54 +.. nonce: yBZnFG +.. section: Security +Due to significant security concerns, the *reuse_address* parameter of +:meth:`asyncio.loop.create_datagram_endpoint` is no longer supported. This +is because of the behavior of ``SO_REUSEADDR`` in UDP. For more details, see +the documentation for ``loop.create_datagram_endpoint()``. (Contributed by +Kyle Stanley, Antoine Pitrou, and Yury Selivanov in :issue:`37228`.) +.. +.. bpo: 38804 +.. date: 2019-11-15-00-54-42 +.. nonce: vjbM8V +.. section: Security +Fixes a ReDoS vulnerability in :mod:`http.cookiejar`. Patch by Ben Caller. +.. +.. bpo: 39028 +.. date: 2019-12-17-23-20-51 +.. nonce: SND4TB +.. section: Core and Builtins +Slightly improve the speed of keyword argument parsing with many kwargs by +strengthening the assumption that kwargs are interned strings. +.. +.. bpo: 39080 +.. date: 2019-12-17-21-45-36 +.. nonce: OrxEVS +.. section: Core and Builtins +Fix the value of *end_col_offset* for Starred Expression AST nodes when they +are among the elements in the *args* attribute of Call AST nodes. +.. +.. bpo: 39031 +.. date: 2019-12-12-21-05-43 +.. nonce: imlCYZ +.. section: Core and Builtins +When parsing an "elif" node, lineno and col_offset of the node now point to +the "elif" keyword and not to its condition, making it consistent with the +"if" node. Patch by Lysandros Nikolaou. +.. +.. bpo: 20443 +.. date: 2019-12-09-17-05-53 +.. nonce: 8OyT5P +.. section: Core and Builtins +In Python 3.9.0a1, sys.argv[0] was made an absolute path if a filename was +specified on the command line. Revert this change, since most users expect +sys.argv to be unmodified. +.. +.. bpo: 39008 +.. date: 2019-12-09-10-38-51 +.. nonce: Rrp6f1 +.. section: Core and Builtins +:c:func:`PySys_Audit` now requires ``Py_ssize_t`` to be used for size +arguments in the format string, regardless of whether ``PY_SSIZE_T_CLEAN`` +was defined at include time. +.. +.. bpo: 38673 +.. date: 2019-12-01-00-17-44 +.. nonce: K_Tze- +.. section: Core and Builtins +In REPL mode, don't switch to PS2 if the line starts with comment or +whitespace. Based on work by Batuhan Taşkaya. +.. +.. bpo: 38922 +.. date: 2019-11-26-12-20-34 +.. nonce: i6ja-i +.. section: Core and Builtins +Calling ``replace`` on a code object now raises the ``code.__new__`` audit +event. +.. +.. bpo: 38920 +.. date: 2019-11-26-09-16-47 +.. nonce: Vx__sT +.. section: Core and Builtins +Add audit hooks for when :func:`sys.excepthook` and +:func:`sys.unraisablehook` are invoked. +.. +.. bpo: 38892 +.. date: 2019-11-22-22-18-50 +.. nonce: LS586s +.. section: Core and Builtins +Improve documentation for audit events table and functions. +.. +.. bpo: 38852 +.. date: 2019-11-22-09-55-21 +.. nonce: y7oPEa +.. section: Core and Builtins +Set the thread stack size to 8 Mb for debug builds on android platforms. +.. +.. bpo: 38858 +.. date: 2019-11-21-09-02-49 +.. nonce: bDLH04 +.. section: Core and Builtins +Each Python subinterpreter now has its own "small integer singletons": +numbers in [-5; 257] range. It is no longer possible to change the number of +small integers at build time by overriding ``NSMALLNEGINTS`` and +``NSMALLPOSINTS`` macros: macros should now be modified manually in +``pycore_pystate.h`` header file. +.. +.. bpo: 36854 +.. date: 2019-11-20-12-01-37 +.. nonce: Zga_md +.. section: Core and Builtins +The garbage collector state becomes per interpreter +(``PyInterpreterState.gc``), rather than being global +(``_PyRuntimeState.gc``). +.. +.. bpo: 38835 +.. date: 2019-11-18-16-37-49 +.. nonce: -U4se1 +.. section: Core and Builtins +The ``PyFPE_START_PROTECT()`` and ``PyFPE_END_PROTECT()`` macros are empty: +they have been doing nothing for the last year, so stop using them. +.. +.. bpo: 38328 +.. date: 2019-11-11-23-44-15 +.. nonce: IFrrjq +.. section: Core and Builtins +Sped up the creation time of constant :class:`list` and :class:`set` +displays. Patch by Brandt Bucher. +.. +.. bpo: 38707 +.. date: 2019-11-08-00-36-10 +.. nonce: SZL036 +.. section: Core and Builtins +``MainThread.native_id`` is now correctly reset in child processes spawned +using :class:`multiprocessing.Process`, instead of retaining the parent's +value. +.. +.. bpo: 38629 +.. date: 2019-10-29-17-11-15 +.. nonce: 3qinhF +.. section: Core and Builtins +Added ``__floor__`` and ``__ceil__`` methods to float object. Patch by +Batuhan Taşkaya. +.. +.. bpo: 27145 +.. date: 2019-09-06-16-40-12 +.. nonce: njuCXU +.. section: Core and Builtins +int + int and int - int operators can now return small integer singletons. +Patch by hongweipeng. +.. +.. bpo: 38021 +.. date: 2019-09-03-19-16-57 +.. nonce: KnUhdB +.. section: Core and Builtins +Provide a platform tag for AIX that is sufficient for PEP425 binary +distribution identification. Patch by Michael Felt. +.. +.. bpo: 35409 +.. date: 2019-07-13-18-01-13 +.. nonce: ozbcsR +.. section: Core and Builtins +Ignore GeneratorExit exceptions when throwing an exception into the aclose +coroutine of an asynchronous generator. +.. +.. bpo: 33387 +.. date: 2018-03-13-14-46-03 +.. nonce: v821M7 +.. section: Core and Builtins +Removed WITH_CLEANUP_START, WITH_CLEANUP_FINISH, BEGIN_FINALLY, END_FINALLY, +CALL_FINALLY and POP_FINALLY bytecodes. Replaced with RERAISE and +WITH_EXCEPT_START bytecodes. The compiler now generates different code for +exceptional and non-exceptional branches for 'with' and 'try-except' +statements. For 'try-finally' statements the 'finally' block is replicated +for each exit from the 'try' body. +.. +.. bpo: 39033 +.. date: 2019-12-13-18-54-49 +.. nonce: cepuyD +.. section: Library +Fix :exc:`NameError` in :mod:`zipimport`. Patch by Karthikeyan Singaravelan. +.. +.. bpo: 39022 +.. date: 2019-12-10-23-34-48 +.. nonce: QDtIxI +.. section: Library +Update importlib.metadata to include improvements from importlib_metadata +1.3 including better serialization of EntryPoints and improved documentation +for custom finders. +.. +.. bpo: 39006 +.. date: 2019-12-09-14-40-09 +.. nonce: v4VsPg +.. section: Library +Fix asyncio when the ssl module is missing: only check for ssl.SSLSocket +instance if the ssl module is available. +.. +.. bpo: 38708 +.. date: 2019-12-07-22-25-39 +.. nonce: rZTUfk +.. section: Library +Fix a potential IndexError in email parser when parsing an empty msg-id. +.. +.. bpo: 38698 +.. date: 2019-12-07-21-49-50 +.. nonce: HxoSym +.. section: Library +Add a new ``InvalidMessageID`` token to email parser to represent invalid +Message-ID headers. Also, add defects when there is remaining value after +parsing the header. +.. +.. bpo: 38994 +.. date: 2019-12-07-18-58-44 +.. nonce: IJYhz_ +.. section: Library +Implement ``__class_getitem__`` for ``os.PathLike``, ``pathlib.Path``. +.. +.. bpo: 38979 +.. date: 2019-12-07-16-32-42 +.. nonce: q0sIHy +.. section: Library +Return class from ``ContextVar.__class_getitem__`` to simplify subclassing. +.. +.. bpo: 38978 +.. date: 2019-12-07-13-40-52 +.. nonce: R3gHZI +.. section: Library +Implement ``__class_getitem__`` on asyncio objects (Future, Task, Queue). +Patch by Batuhan Taskaya. +.. +.. bpo: 38916 +.. date: 2019-12-06-18-47-56 +.. nonce: K-raU8 +.. section: Library +:class:`array.array`: Remove ``tostring()`` and ``fromstring()`` methods. +They were aliases to ``tobytes()`` and ``frombytes()``, deprecated since +Python 3.2. +.. +.. bpo: 38986 +.. date: 2019-12-06-15-11-42 +.. nonce: bg6iZt +.. section: Library +Make repr of C accelerated TaskWakeupMethWrapper the same as of pure Python +version. +.. +.. bpo: 38982 +.. date: 2019-12-05-18-21-26 +.. nonce: W3u-03 +.. section: Library +Fix asyncio ``PidfdChildWatcher``: handle ``waitpid()`` error. If +``waitpid()`` is called elsewhere, ``waitpid()`` call fails with +:exc:`ChildProcessError`: use return code 255 in this case, and log a +warning. It ensures that the pidfd file descriptor is closed if this error +occurs. +.. +.. bpo: 38529 +.. date: 2019-12-05-16-13-25 +.. nonce: yvQgx3 +.. section: Library +Drop too noisy asyncio warning about deletion of a stream without explicit +``.close()`` call. +.. +.. bpo: 27413 +.. date: 2019-12-05-02-02-58 +.. nonce: 212Th2 +.. section: Library +Added ability to pass through ``ensure_ascii`` options to json.dumps in the +``json.tool`` command-line interface. +.. +.. bpo: 38634 +.. date: 2019-12-04-15-56-28 +.. nonce: pq0ZWa +.. section: Library +The :mod:`readline` module now detects if Python is linked to libedit at +runtime on all platforms. Previously, the check was only done on macOS. +.. +.. bpo: 33684 +.. date: 2019-12-04-15-28-40 +.. nonce: QeSmQP +.. section: Library +Fix ``json.tool`` failed to read a JSON file with non-ASCII characters when +locale encoding is not UTF-8. +.. +.. bpo: 38698 +.. date: 2019-12-02-10-35-19 +.. nonce: WZnAPQ +.. section: Library +Prevent UnboundLocalError to pop up in parse_message_id. +parse_message_id() was improperly using a token defined inside an exception +handler, which was raising ``UnboundLocalError`` on parsing an invalid value. +Patch by Claudiu Popa. +.. +.. bpo: 38927 +.. date: 2019-11-27-17-47-00 +.. nonce: qT7xKY +.. section: Library +Use ``python -m pip`` instead of ``pip`` to upgrade dependencies in venv. +.. +.. bpo: 26730 +.. date: 2019-11-27-16-30-02 +.. nonce: 56cdBn +.. section: Library +Fix ``SpooledTemporaryFile.rollover()`` might corrupt the file when it is in +text mode. Patch by Serhiy Storchaka. +.. +.. bpo: 38881 +.. date: 2019-11-22-20-03-46 +.. nonce: 7HV1Q0 +.. section: Library +random.choices() now raises a ValueError when all the weights are zero. +.. +.. bpo: 38876 +.. date: 2019-11-22-10-58-58 +.. nonce: qqy1Vp +.. section: Library +Raise pickle.UnpicklingError when loading an item from memo for invalid +input. +The previous code was raising a ``KeyError`` for both the Python and C +implementation. This was caused by the specified index of an invalid input +which did not exist in the memo structure, where the pickle stores what +objects it has seen. The malformed input would have caused either a ``BINGET`` +or ``LONG_BINGET`` load from the memo, leading to a ``KeyError`` as the +determined index was bogus. Patch by Claudiu Popa. +.. +.. bpo: 38688 +.. date: 2019-11-22-10-45-03 +.. nonce: iKx23z +.. section: Library +Calling func:``shutil.copytree`` to copy a directory tree from one directory +to another subdirectory resulted in an endless loop and a RecursionError. A +fix was added to consume an iterator and create the list of the entries to +be copied, avoiding the recursion for newly created directories. Patch by +Bruno P. Kinoshita. +.. +.. bpo: 38863 +.. date: 2019-11-21-16-30-00 +.. nonce: RkdTjf +.. section: Library +Improve :func:`is_cgi` function in :mod:`http.server`, which enables +processing the case that cgi directory is a child of another directory other +than root. +.. +.. bpo: 37838 +.. date: 2019-11-21-11-39-17 +.. nonce: lRFcEC +.. section: Library +:meth:`typing.get_type_hints` properly handles functions decorated with +:meth:`functools.wraps`. +.. +.. bpo: 38870 +.. date: 2019-11-20-22-43-48 +.. nonce: rLVZEv +.. section: Library +Expose :func:`ast.unparse` as a function of the :mod:`ast` module that can +be used to unparse an :class:`ast.AST` object and produce a string with code +that would produce an equivalent :class:`ast.AST` object when parsed. Patch +by Pablo Galindo and Batuhan Taskaya. +.. +.. bpo: 38859 +.. date: 2019-11-19-16-30-46 +.. nonce: AZUzL8 +.. section: Library +AsyncMock now returns StopAsyncIteration on the exhaustion of a side_effects +iterable. Since PEP-479 its Impossible to raise a StopIteration exception +from a coroutine. +.. +.. bpo: 38857 +.. date: 2019-11-19-16-28-25 +.. nonce: YPUkU9 +.. section: Library +AsyncMock fix for return values that are awaitable types. This also covers +side_effect iterable values that happened to be awaitable, and wraps +callables that return an awaitable type. Before these awaitables were being +awaited instead of being returned as is. +.. +.. bpo: 38834 +.. date: 2019-11-18-17-08-23 +.. nonce: abcdef +.. section: Library +:class:`typing.TypedDict` subclasses now track which keys are optional using +the ``__required_keys__`` and ``__optional_keys__`` attributes, to enable +runtime validation by downstream projects. Patch by Zac Hatfield-Dodds. +.. +.. bpo: 38821 +.. date: 2019-11-16-23-26-25 +.. nonce: -albNN +.. section: Library +Fix unhandled exceptions in :mod:`argparse` when internationalizing error +messages for arguments with ``nargs`` set to special (non-integer) values. +Patch by Federico Bond. +.. +.. bpo: 38820 +.. date: 2019-11-16-16-09-07 +.. nonce: ivhUSV +.. section: Library +Make Python compatible with OpenSSL 3.0.0. :func:`ssl.SSLSocket.getpeercert` +no longer returns IPv6 addresses with a trailing new line. +.. +.. bpo: 38811 +.. date: 2019-11-15-18-06-04 +.. nonce: AmdQ6M +.. section: Library +Fix an unhandled exception in :mod:`pathlib` when :meth:`os.link` is +missing. Patch by Toke Høiland-Jørgensen. +.. +.. bpo: 38686 +.. date: 2019-11-06-15-26-15 +.. nonce: HNFBce +.. section: Library +Added support for multiple ``qop`` values in +:class:`urllib.request.AbstractDigestAuthHandler`. +.. +.. bpo: 38712 +.. date: 2019-11-05-21-10-12 +.. nonce: ezJ0TP +.. section: Library +Add the Linux-specific :func:`signal.pidfd_send_signal` function, which +allows sending a signal to a process identified by a file descriptor rather +than a pid. +.. +.. bpo: 38348 +.. date: 2019-10-02-18-15-28 +.. nonce: _-5eq2 +.. section: Library +Add ``-i`` and ``--indent`` (indentation level), and ``--no-type-comments`` +(type comments) command line options to ast parsing tool. +.. +.. bpo: 37523 +.. date: 2019-10-02-02-55-37 +.. nonce: GguwJ6 +.. section: Library +Change :class:`zipfile.ZipExtFile` to raise ``ValueError`` when trying to +access the underlying file object after it has been closed. This new +behavior is consistent with how accessing closed files is handled in other +parts of Python. +.. +.. bpo: 38045 +.. date: 2019-09-30-12-09-41 +.. nonce: VDRtd3 +.. section: Library +Improve the performance of :func:`enum._decompose` in :mod:`enum`. Patch by +hongweipeng. +.. +.. bpo: 36820 +.. date: 2019-05-06-15-34-17 +.. nonce: Eh5mIB +.. section: Library +Break cycle generated when saving an exception in socket.py, codeop.py and +dyld.py as they keep alive not only the exception but user objects through +the ``__traceback__`` attribute. Patch by Mario Corchero. +.. +.. bpo: 36406 +.. date: 2019-03-24-12-12-27 +.. nonce: mCEkOl +.. section: Library +Handle namespace packages in :mod:`doctest`. Patch by Karthikeyan +Singaravelan. +.. +.. bpo: 34776 +.. date: 2018-09-23-14-24-37 +.. nonce: 1SrQe3 +.. section: Library +Fix dataclasses to support forward references in type annotations +.. +.. bpo: 20928 +.. date: 2018-03-30-16-18-12 +.. nonce: ieXu6I +.. section: Library +ElementTree supports recursive XInclude processing. Patch by Stefan Behnel. +.. +.. bpo: 29636 +.. date: 2018-02-22-11-24-33 +.. nonce: ogGRE2 +.. section: Library +Add whitespace options for formatting JSON with the ``json.tool`` CLI. The +following mutually exclusive options are now supported: ``--indent`` for +setting the indent level in spaces; ``--tab`` for indenting with tabs; +``--no-indent`` for suppressing newlines; and ``--compact`` for suppressing +all whitespace. The default behavior remains the same as ``--indent=4``. +.. +.. bpo: 38928 +.. date: 2019-11-27-17-51-27 +.. nonce: AfgvfO +.. section: Documentation +Correct when venv's ``upgrade_dependencies()`` and ``--upgrade-deps`` are +added. +.. +.. bpo: 38899 +.. date: 2019-11-22-15-57-29 +.. nonce: 4aYPW2 +.. section: Documentation +Update documentation to state that to activate virtual environments under +fish one should use ``source``, not ``.`` as documented at +https://fishshell.com/docs/current/cmds/source.html. +.. +.. bpo: 22377 +.. date: 2019-10-01-10-53-46 +.. nonce: 5ni-iC +.. section: Documentation +Improves documentation of the values that :meth:`datetime.datetime.strptime` +accepts for ``%Z``. Patch by Karl Dubost. +.. +.. bpo: 38546 +.. date: 2019-12-18-14-52-08 +.. nonce: 2kxNuM +.. section: Tests +Fix test_ressources_gced_in_workers() of test_concurrent_futures: explicitly +stop the manager to prevent leaking a child process running in the +background after the test completes. +.. +.. bpo: 38546 +.. date: 2019-12-17-15-27-07 +.. nonce: 82JwN2 +.. section: Tests +Multiprocessing and concurrent.futures tests now stop the resource tracker +process when tests complete. +.. +.. bpo: 38614 +.. date: 2019-12-10-14-26-23 +.. nonce: 89JpNh +.. section: Tests +Replace hardcoded timeout constants in tests with new :mod:`test.support` +constants: :data:`~test.support.LOOPBACK_TIMEOUT`, +:data:`~test.support.INTERNET_TIMEOUT`, :data:`~test.support.SHORT_TIMEOUT` +and :data:`~test.support.LONG_TIMEOUT`. It becomes easier to adjust these +four timeout constants for all tests at once, rather than having to adjust +every single test file. +.. +.. bpo: 38547 +.. date: 2019-12-09-11-32-34 +.. nonce: Juw54e +.. section: Tests +Fix test_pty: if the process is the session leader, closing the master file +descriptor raises a SIGHUP signal: simply ignore SIGHUP when running the +tests. +.. +.. bpo: 38992 +.. date: 2019-12-08-15-11-06 +.. nonce: cVoHOZ +.. section: Tests +Fix a test for :func:`math.fsum` that was failing due to constant folding. +.. +.. bpo: 38991 +.. date: 2019-12-07-00-52-09 +.. nonce: JE3_o- +.. section: Tests +:mod:`test.support`: :func:`~test.support.run_python_until_end`, +:func:`~test.support.assert_python_ok` and +:func:`~test.support.assert_python_failure` functions no longer strip +whitespaces from stderr. Remove ``test.support.strip_python_stderr()`` +function. +.. +.. bpo: 38965 +.. date: 2019-12-04-17-08-55 +.. nonce: yqax3m +.. section: Tests +Fix test_faulthandler on GCC 10. Use the "volatile" keyword in +``faulthandler._stack_overflow()`` to prevent tail call optimization on any +compiler, rather than relying on compiler specific pragma. +.. +.. bpo: 38875 +.. date: 2019-11-21-09-11-06 +.. nonce: wSZJal +.. section: Tests +test_capi: trashcan tests now require the test "cpu" resource. +.. +.. bpo: 38841 +.. date: 2019-11-20-16-08-19 +.. nonce: 5F5Lbw +.. section: Tests +Skip asyncio test_create_datagram_endpoint_existing_sock_unix on platforms +lacking a functional bind() for named unix domain sockets. +.. +.. bpo: 38692 +.. date: 2019-11-20-15-42-06 +.. nonce: aqAvyF +.. section: Tests +Skip the test_posix.test_pidfd_open() test if ``os.pidfd_open()`` fails with +a :exc:`PermissionError`. This situation can happen in a Linux sandbox using +a syscall whitelist which doesn't allow the ``pidfd_open()`` syscall yet. +.. +.. bpo: 38839 +.. date: 2019-11-18-22-10-55 +.. nonce: di6tXv +.. section: Tests +Fix some unused functions in tests. Patch by Adam Johnson. +.. +.. bpo: 38669 +.. date: 2019-11-04-02-54-16 +.. nonce: pazXZ8 +.. section: Tests +Raise :exc:`TypeError` when passing target as a string with +:meth:`unittest.mock.patch.object`. +.. +.. bpo: 37957 +.. date: 2019-10-30-00-01-43 +.. nonce: X1r78F +.. section: Tests +test.regrtest now can receive a list of test patterns to ignore (using the +-i/--ignore argument) or a file with a list of patterns to ignore (using the +--ignore-file argument). Patch by Pablo Galindo. +.. +.. bpo: 37404 +.. date: 2019-12-01-21-45-24 +.. nonce: cNsA7S +.. section: Build +:mod:`asyncio` now raises :exc:`TypeError` when calling incompatible +methods with an :class:`ssl.SSLSocket` socket. Patch by Ido Michael. +.. +.. bpo: 36500 +.. date: 2019-04-02-01-59-26 +.. nonce: fyG6_U +.. section: Build +Added an optional "regen" project to the Visual Studio solution that will +regenerate all grammar, tokens, and opcodes. +.. +.. bpo: 39007 +.. date: 2019-12-09-10-40-34 +.. nonce: vtarxo +.. section: Windows +Add auditing events to functions in :mod:`winreg`. +.. +.. bpo: 33125 +.. date: 2019-11-14-08-57-50 +.. nonce: EN5MWS +.. section: Windows +Add support for building and releasing Windows ARM64 packages. +.. +.. bpo: 37931 +.. date: 2019-08-23-12-14-34 +.. nonce: goYgQj +.. section: macOS +Fixed a crash on OSX dynamic builds that occurred when re-initializing the +posix module after a Py_Finalize if the environment had changed since the +previous ``import posix``. Patch by Benoît Hudson. +.. +.. bpo: 38944 +.. date: 2019-11-30-12-10-36 +.. nonce: _3xjKG +.. section: IDLE +Escape key now closes IDLE completion windows. Patch by Johnny Najera. +.. +.. bpo: 38943 +.. date: 2019-11-29-23-44-11 +.. nonce: 8pUKKs +.. section: IDLE +Fix IDLE autocomplete windows not always appearing on some systems. Patch by +Johnny Najera. +.. +.. bpo: 38862 +.. date: 2019-11-23-21-50-57 +.. nonce: KQ9A0m +.. section: IDLE +'Strip Trailing Whitespace' on the Format menu removes extra newlines at the +end of non-shell files. +.. +.. bpo: 38636 +.. date: 2019-10-30-22-11-16 +.. nonce: hUhDeB +.. section: IDLE +Fix IDLE Format menu tab toggle and file indent width. These functions +(default shortcuts Alt-T and Alt-U) were mistakenly disabled in 3.7.5 and +3.8.0. +.. +.. bpo: 38896 +.. date: 2019-11-22-19-43-43 +.. nonce: 6wvNMJ +.. section: C API +Remove ``PyUnicode_ClearFreeList()`` function: the Unicode free list has +been removed in Python 3.3. +.. +.. bpo: 37340 +.. date: 2019-11-20-11-08-06 +.. nonce: JBQJMS +.. section: C API +Remove ``PyMethod_ClearFreeList()`` and ``PyCFunction_ClearFreeList()`` +functions: the free lists of bound method objects have been removed. +.. +.. bpo: 38835 +.. date: 2019-11-18-15-38-23 +.. nonce: II8Szd +.. section: C API +Exclude ``PyFPE_START_PROTECT()`` and ``PyFPE_END_PROTECT()`` macros of +``pyfpe.h`` from ``Py_LIMITED_API`` (stable API). + +.. bpo: 25630 +.. date: 9450 +.. nonce: ZxzcoY +.. release date: 2015-11-22 +.. section: Core and Builtins +Fix a possible segfault during argument parsing in functions that accept +filesystem paths. +.. +.. bpo: 23564 +.. date: 9449 +.. nonce: XHarGG +.. section: Core and Builtins +Fixed a partially broken sanity check in the _posixsubprocess internals +regarding how fds_to_pass were passed to the child. The bug had no actual +impact as subprocess.py already avoided it. +.. +.. bpo: 25388 +.. date: 9448 +.. nonce: zm3uuQ +.. section: Core and Builtins +Fixed tokenizer crash when processing undecodable source code with a null +byte. +.. +.. bpo: 25462 +.. date: 9447 +.. nonce: eXDzgO +.. section: Core and Builtins +The hash of the key now is calculated only once in most operations in C +implementation of OrderedDict. +.. +.. bpo: 22995 +.. date: 9446 +.. nonce: 90kpuP +.. section: Core and Builtins +Default implementation of __reduce__ and __reduce_ex__ now rejects builtin +types with not defined __new__. +.. +.. bpo: 25555 +.. date: 9445 +.. nonce: MUpG-j +.. section: Core and Builtins +Fix parser and AST: fill lineno and col_offset of "arg" node when compiling +AST from Python objects. +.. +.. bpo: 24802 +.. date: 9444 +.. nonce: Qie066 +.. section: Core and Builtins +Avoid buffer overreads when int(), float(), compile(), exec() and eval() are +passed bytes-like objects. These objects are not necessarily terminated by +a null byte, but the functions assumed they were. +.. +.. bpo: 24726 +.. date: 9443 +.. nonce: AHk4v2 +.. section: Core and Builtins +Fixed a crash and leaking NULL in repr() of OrderedDict that was mutated by +direct calls of dict methods. +.. +.. bpo: 25449 +.. date: 9442 +.. nonce: VqTOFi +.. section: Core and Builtins +Iterating OrderedDict with keys with unstable hash now raises KeyError in C +implementations as well as in Python implementation. +.. +.. bpo: 25395 +.. date: 9441 +.. nonce: htkE3W +.. section: Core and Builtins +Fixed crash when highly nested OrderedDict structures were garbage +collected. +.. +.. bpo: 25274 +.. date: 9440 +.. nonce: QCGvAF +.. section: Core and Builtins +sys.setrecursionlimit() now raises a RecursionError if the new recursion +limit is too low depending at the current recursion depth. Modify also the +"lower-water mark" formula to make it monotonic. This mark is used to decide +when the overflowed flag of the thread state is reset. +.. +.. bpo: 24402 +.. date: 9439 +.. nonce: MAgi3X +.. section: Core and Builtins +Fix input() to prompt to the redirected stdout when sys.stdout.fileno() +fails. +.. +.. bpo: 24806 +.. date: 9438 +.. nonce: Nb0znT +.. section: Core and Builtins +Prevent builtin types that are not allowed to be subclassed from being +subclassed through multiple inheritance. +.. +.. bpo: 24848 +.. date: 9437 +.. nonce: HlUSuy +.. section: Core and Builtins +Fixed a number of bugs in UTF-7 decoding of misformed data. +.. +.. bpo: 25280 +.. date: 9436 +.. nonce: ivTMwd +.. section: Core and Builtins +Import trace messages emitted in verbose (-v) mode are no longer formatted +twice. +.. +.. bpo: 25003 +.. date: 9435 +.. nonce: _ban92 +.. section: Core and Builtins +On Solaris 11.3 or newer, os.urandom() now uses the getrandom() function +instead of the getentropy() function. The getentropy() function is blocking +to generate very good quality entropy, os.urandom() doesn't need such +high-quality entropy. +.. +.. bpo: 25182 +.. date: 9434 +.. nonce: gBDq-T +.. section: Core and Builtins +The stdprinter (used as sys.stderr before the io module is imported at +startup) now uses the backslashreplace error handler. +.. +.. bpo: 25131 +.. date: 9433 +.. nonce: j5hH6a +.. section: Core and Builtins +Make the line number and column offset of set/dict literals and +comprehensions correspond to the opening brace. +.. +.. bpo: 25150 +.. date: 9432 +.. nonce: 0Gh-Ty +.. section: Core and Builtins +Hide the private :samp:`_Py_atomic_{xxx}` symbols from the public Python.h header to +fix a compilation error with OpenMP. PyThreadState_GET() becomes an alias to +PyThreadState_Get() to avoid ABI incompatibilities. +.. +.. bpo: 25626 +.. date: 9431 +.. nonce: TQ3fvb +.. section: Library +Change three zlib functions to accept sizes that fit in Py_ssize_t, but +internally cap those sizes to UINT_MAX. This resolves a regression in 3.5 +where GzipFile.read() failed to read chunks larger than 2 or 4 GiB. The +change affects the zlib.Decompress.decompress() max_length parameter, the +zlib.decompress() bufsize parameter, and the zlib.Decompress.flush() length +parameter. +.. +.. bpo: 25583 +.. date: 9430 +.. nonce: Gk-cim +.. section: Library +Avoid incorrect errors raised by os.makedirs(exist_ok=True) when the OS +gives priority to errors such as EACCES over EEXIST. +.. +.. bpo: 25593 +.. date: 9429 +.. nonce: 56uegI +.. section: Library +Change semantics of EventLoop.stop() in asyncio. +.. +.. bpo: 6973 +.. date: 9428 +.. nonce: nl5cHt +.. section: Library +When we know a subprocess.Popen process has died, do not allow the +send_signal(), terminate(), or kill() methods to do anything as they could +potentially signal a different process. +.. +.. bpo: 25590 +.. date: 9427 +.. nonce: aCt-yW +.. section: Library +In the Readline completer, only call getattr() once per attribute. +.. +.. bpo: 25498 +.. date: 9426 +.. nonce: AvqEBl +.. section: Library +Fix a crash when garbage-collecting ctypes objects created by wrapping a +memoryview. This was a regression made in 3.5a1. Based on patch by +Eryksun. +.. +.. bpo: 25584 +.. date: 9425 +.. nonce: 124mYw +.. section: Library +Added "escape" to the __all__ list in the glob module. +.. +.. bpo: 25584 +.. date: 9424 +.. nonce: ZeWX0J +.. section: Library +Fixed recursive glob() with patterns starting with ``**``. +.. +.. bpo: 25446 +.. date: 9423 +.. nonce: k1DByx +.. section: Library +Fix regression in smtplib's AUTH LOGIN support. +.. +.. bpo: 18010 +.. date: 9422 +.. nonce: Azyf1C +.. section: Library +Fix the pydoc web server's module search function to handle exceptions from +importing packages. +.. +.. bpo: 25554 +.. date: 9421 +.. nonce: UM9MlR +.. section: Library +Got rid of circular references in regular expression parsing. +.. +.. bpo: 25510 +.. date: 9420 +.. nonce: 79g7LA +.. section: Library +fileinput.FileInput.readline() now returns b'' instead of '' at the end if +the FileInput was opened with binary mode. Patch by Ryosuke Ito. +.. +.. bpo: 25503 +.. date: 9419 +.. nonce: Zea0Y7 +.. section: Library +Fixed inspect.getdoc() for inherited docstrings of properties. Original +patch by John Mark Vandenberg. +.. +.. bpo: 25515 +.. date: 9418 +.. nonce: fQsyYG +.. section: Library +Always use os.urandom as a source of randomness in uuid.uuid4. +.. +.. bpo: 21827 +.. date: 9417 +.. nonce: k2oreR +.. section: Library +Fixed textwrap.dedent() for the case when largest common whitespace is a +substring of smallest leading whitespace. Based on patch by Robert Li. +.. +.. bpo: 25447 +.. date: 9416 +.. nonce: eDYc4t +.. section: Library +The lru_cache() wrapper objects now can be copied and pickled (by returning +the original object unchanged). +.. +.. bpo: 25390 +.. date: 9415 +.. nonce: 6mSgRq +.. section: Library +typing: Don't crash on Union[str, Pattern]. +.. +.. bpo: 25441 +.. date: 9414 +.. nonce: d7zph6 +.. section: Library +asyncio: Raise error from drain() when socket is closed. +.. +.. bpo: 25410 +.. date: 9413 +.. nonce: QAs_3B +.. section: Library +Cleaned up and fixed minor bugs in C implementation of OrderedDict. +.. +.. bpo: 25411 +.. date: 9412 +.. nonce: qsJTCb +.. section: Library +Improved Unicode support in SMTPHandler through better use of the email +package. Thanks to user simon04 for the patch. +.. +.. bpo: 25407 +.. date: 9411 +.. nonce: ukNt1D +.. section: Library +Remove mentions of the formatter module being removed in Python 3.6. +.. +.. bpo: 25406 +.. date: 9410 +.. nonce: 5MZKU_ +.. section: Library +Fixed a bug in C implementation of OrderedDict.move_to_end() that caused +segmentation fault or hang in iterating after moving several items to the +start of ordered dict. +.. +.. bpo: 25364 +.. date: 9409 +.. nonce: u_1Wi6 +.. section: Library +zipfile now works in threads disabled builds. +.. +.. bpo: 25328 +.. date: 9408 +.. nonce: Rja1Xg +.. section: Library +smtpd's SMTPChannel now correctly raises a ValueError if both decode_data +and enable_SMTPUTF8 are set to true. +.. +.. bpo: 25316 +.. date: 9407 +.. nonce: dHQHWI +.. section: Library +distutils raises OSError instead of DistutilsPlatformError when MSVC is not +installed. +.. +.. bpo: 25380 +.. date: 9406 +.. nonce: sKZ6-I +.. section: Library +Fixed protocol for the STACK_GLOBAL opcode in pickletools.opcodes. +.. +.. bpo: 23972 +.. date: 9405 +.. nonce: s2g30g +.. section: Library +Updates asyncio datagram create method allowing reuseport and reuseaddr +socket options to be set prior to binding the socket. Mirroring the existing +asyncio create_server method the reuseaddr option for datagram sockets +defaults to True if the O/S is 'posix' (except if the platform is Cygwin). +Patch by Chris Laws. +.. +.. bpo: 25304 +.. date: 9404 +.. nonce: CsmLyI +.. section: Library +Add asyncio.run_coroutine_threadsafe(). This lets you submit a coroutine to +a loop from another thread, returning a concurrent.futures.Future. By +Vincent Michel. +.. +.. bpo: 25232 +.. date: 9403 +.. nonce: KhKjCE +.. section: Library +Fix CGIRequestHandler to split the query from the URL at the first question +mark (?) rather than the last. Patch from Xiang Zhang. +.. +.. bpo: 24657 +.. date: 9402 +.. nonce: h2Ag7y +.. section: Library +Prevent CGIRequestHandler from collapsing slashes in the query part of the +URL as if it were a path. Patch from Xiang Zhang. +.. +.. bpo: 24483 +.. date: 9401 +.. nonce: WPLGSJ +.. section: Library +C implementation of functools.lru_cache() now calculates key's hash only +once. +.. +.. bpo: 22958 +.. date: 9400 +.. nonce: Ebu7Gl +.. section: Library +Constructor and update method of weakref.WeakValueDictionary now accept the +self and the dict keyword arguments. +.. +.. bpo: 22609 +.. date: 9399 +.. nonce: fV7hdV +.. section: Library +Constructor of collections.UserDict now accepts the self keyword argument. +.. +.. bpo: 25111 +.. date: 9398 +.. nonce: azL4qE +.. section: Library +Fixed comparison of traceback.FrameSummary. +.. +.. bpo: 25262 +.. date: 9397 +.. nonce: pQS5cB +.. section: Library +Added support for BINBYTES8 opcode in Python implementation of unpickler. +Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8 opcodes no +longer silently ignored on 32-bit platforms in C implementation. +.. +.. bpo: 25034 +.. date: 9396 +.. nonce: eGvOIb +.. section: Library +Fix string.Formatter problem with auto-numbering and nested format_specs. +Patch by Anthon van der Neut. +.. +.. bpo: 25233 +.. date: 9395 +.. nonce: EdZV9x +.. section: Library +Rewrite the guts of asyncio.Queue and asyncio.Semaphore to be more +understandable and correct. +.. +.. bpo: 25203 +.. date: 9394 +.. nonce: IgDEbt +.. section: Library +Failed readline.set_completer_delims() no longer left the module in +inconsistent state. +.. +.. bpo: 23600 +.. date: 9393 +.. nonce: 7J_RD5 +.. section: Library +Default implementation of tzinfo.fromutc() was returning wrong results in +some cases. +.. +.. bpo: 23329 +.. date: 9392 +.. nonce: yccJBE +.. section: Library +Allow the ssl module to be built with older versions of LibreSSL. +.. +.. bpo: 0 +.. date: 9391 +.. nonce: ww9QSm +.. section: Library +Prevent overflow in _Unpickler_Read. +.. +.. bpo: 25047 +.. date: 9390 +.. nonce: kc8tqx +.. section: Library +The XML encoding declaration written by Element Tree now respects the letter +case given by the user. This restores the ability to write encoding names in +uppercase like "UTF-8", which worked in Python 2. +.. +.. bpo: 25135 +.. date: 9389 +.. nonce: gVHNy- +.. section: Library +Make deque_clear() safer by emptying the deque before clearing. This helps +avoid possible reentrancy issues. +.. +.. bpo: 19143 +.. date: 9388 +.. nonce: 76SBSO +.. section: Library +platform module now reads Windows version from kernel32.dll to avoid +compatibility shims. +.. +.. bpo: 25092 +.. date: 9387 +.. nonce: fQ37Ac +.. section: Library +Fix datetime.strftime() failure when errno was already set to EINVAL. +.. +.. bpo: 23517 +.. date: 9386 +.. nonce: 3ABmf1 +.. section: Library +Fix rounding in fromtimestamp() and utcfromtimestamp() methods of +datetime.datetime: microseconds are now rounded to nearest with ties going +to nearest even integer (ROUND_HALF_EVEN), instead of being rounding towards +minus infinity (ROUND_FLOOR). It's important that these methods use the same +rounding mode than datetime.timedelta to keep the property: +(datetime(1970,1,1) + timedelta(seconds=t)) == datetime.utcfromtimestamp(t). +It also the rounding mode used by round(float) for example. +.. +.. bpo: 25155 +.. date: 9385 +.. nonce: JiETzD +.. section: Library +Fix datetime.datetime.now() and datetime.datetime.utcnow() on Windows to +support date after year 2038. It was a regression introduced in Python +3.5.0. +.. +.. bpo: 25108 +.. date: 9384 +.. nonce: zGPbgA +.. section: Library +Omitted internal frames in traceback functions print_stack(), +format_stack(), and extract_stack() called without arguments. +.. +.. bpo: 25118 +.. date: 9383 +.. nonce: wGm1u6 +.. section: Library +Fix a regression of Python 3.5.0 in os.waitpid() on Windows. +.. +.. bpo: 24684 +.. date: 9382 +.. nonce: t4T77O +.. section: Library +socket.socket.getaddrinfo() now calls PyUnicode_AsEncodedString() instead of +calling the encode() method of the host, to handle correctly custom string +with an encode() method which doesn't return a byte string. The encoder of +the IDNA codec is now called directly instead of calling the encode() method +of the string. +.. +.. bpo: 25060 +.. date: 9381 +.. nonce: zLdvIk +.. section: Library +Correctly compute stack usage of the BUILD_MAP opcode. +.. +.. bpo: 24857 +.. date: 9380 +.. nonce: PpJWZ9 +.. section: Library +Comparing call_args to a long sequence now correctly returns a boolean +result instead of raising an exception. Patch by A Kaptur. +.. +.. bpo: 23144 +.. date: 9379 +.. nonce: cLf67X +.. section: Library +Make sure that HTMLParser.feed() returns all the data, even when +convert_charrefs is True. +.. +.. bpo: 24982 +.. date: 9378 +.. nonce: sGMMAR +.. section: Library +shutil.make_archive() with the "zip" format now adds entries for directories +(including empty directories) in ZIP file. +.. +.. bpo: 25019 +.. date: 9377 +.. nonce: JQJlOZ +.. section: Library +Fixed a crash caused by setting non-string key of expat parser. Based on +patch by John Leitch. +.. +.. bpo: 16180 +.. date: 9376 +.. nonce: 6IUcNS +.. section: Library +Exit pdb if file has syntax error, instead of trapping user in an infinite +loop. Patch by Xavier de Gaye. +.. +.. bpo: 24891 +.. date: 9375 +.. nonce: ddVmHS +.. section: Library +Fix a race condition at Python startup if the file descriptor of stdin (0), +stdout (1) or stderr (2) is closed while Python is creating sys.stdin, +sys.stdout and sys.stderr objects. These attributes are now set to None if +the creation of the object failed, instead of raising an OSError exception. +Initial patch written by Marco Paolini. +.. +.. bpo: 24992 +.. date: 9374 +.. nonce: 5sqF74 +.. section: Library +Fix error handling and a race condition (related to garbage collection) in +collections.OrderedDict constructor. +.. +.. bpo: 24881 +.. date: 9373 +.. nonce: ZoVZXu +.. section: Library +Fixed setting binary mode in Python implementation of FileIO on Windows and +Cygwin. Patch from Akira Li. +.. +.. bpo: 25578 +.. date: 9372 +.. nonce: G6S-ft +.. section: Library +Fix (another) memory leak in SSLSocket.getpeercer(). +.. +.. bpo: 25530 +.. date: 9371 +.. nonce: hDFkwu +.. section: Library +Disable the vulnerable SSLv3 protocol by default when creating +ssl.SSLContext. +.. +.. bpo: 25569 +.. date: 9370 +.. nonce: CfvQjK +.. section: Library +Fix memory leak in SSLSocket.getpeercert(). +.. +.. bpo: 25471 +.. date: 9369 +.. nonce: T0A02M +.. section: Library +Sockets returned from accept() shouldn't appear to be nonblocking. +.. +.. bpo: 25319 +.. date: 9368 +.. nonce: iyuglv +.. section: Library +When threading.Event is reinitialized, the underlying condition should use a +regular lock rather than a recursive lock. +.. +.. bpo: 21112 +.. date: 9367 +.. nonce: vSFU1r +.. section: Library +Fix regression in unittest.expectedFailure on subclasses. Patch from Berker +Peksag. +.. +.. bpo: 24764 +.. date: 9366 +.. nonce: QwFZ2S +.. section: Library +cgi.FieldStorage.read_multi() now ignores the Content-Length header in part +headers. Patch written by Peter Landry and reviewed by Pierre Quentel. +.. +.. bpo: 24913 +.. date: 9365 +.. nonce: p2ZAJ4 +.. section: Library +Fix overrun error in deque.index(). Found by John Leitch and Bryce Darling. +.. +.. bpo: 24774 +.. date: 9364 +.. nonce: xLbskG +.. section: Library +Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu. +.. +.. bpo: 21159 +.. date: 9363 +.. nonce: ochL5W +.. section: Library +Improve message in configparser.InterpolationMissingOptionError. Patch from +Łukasz Langa. +.. +.. bpo: 20362 +.. date: 9362 +.. nonce: 5aP_Ri +.. section: Library +Honour TestCase.longMessage correctly in assertRegex. Patch from Ilia +Kurenkov. +.. +.. bpo: 23572 +.. date: 9361 +.. nonce: QhQ9RD +.. section: Library +Fixed functools.singledispatch on classes with false metaclasses. Patch by +Ethan Furman. +.. +.. bpo: 0 +.. date: 9360 +.. nonce: DO1sFa +.. section: Library +asyncio: ensure_future() now accepts awaitable objects. +.. +.. bpo: 15348 +.. date: 9359 +.. nonce: d1Fg01 +.. section: IDLE +Stop the debugger engine (normally in a user process) before closing the +debugger window (running in the IDLE process). This prevents the +RuntimeErrors that were being caught and ignored. +.. +.. bpo: 24455 +.. date: 9358 +.. nonce: x6YqtE +.. section: IDLE +Prevent IDLE from hanging when a) closing the shell while the debugger is +active (15347); b) closing the debugger with the [X] button (15348); and c) +activating the debugger when already active (24455). The patch by Mark +Roseman does this by making two changes. 1. Suspend and resume the +gui.interaction method with the tcl vwait mechanism intended for this +purpose (instead of root.mainloop & .quit). 2. In gui.run, allow any +existing interaction to terminate first. +.. +.. bpo: 0 +.. date: 9357 +.. nonce: Yp9LRY +.. section: IDLE +Change 'The program' to 'Your program' in an IDLE 'kill program?' message to +make it clearer that the program referred to is the currently running user +program, not IDLE itself. +.. +.. bpo: 24750 +.. date: 9356 +.. nonce: xgsi-K +.. section: IDLE +Improve the appearance of the IDLE editor window status bar. Patch by Mark +Roseman. +.. +.. bpo: 25313 +.. date: 9355 +.. nonce: xMXHpO +.. section: IDLE +Change the handling of new built-in text color themes to better address the +compatibility problem introduced by the addition of IDLE Dark. Consistently +use the revised idleConf.CurrentTheme everywhere in idlelib. +.. +.. bpo: 24782 +.. date: 9354 +.. nonce: RgIPYE +.. section: IDLE +Extension configuration is now a tab in the IDLE Preferences dialog rather +than a separate dialog. The former tabs are now a sorted list. Patch by +Mark Roseman. +.. +.. bpo: 22726 +.. date: 9353 +.. nonce: x8T0dA +.. section: IDLE +Re-activate the config dialog help button with some content about the other +buttons and the new IDLE Dark theme. +.. +.. bpo: 24820 +.. date: 9352 +.. nonce: TFPJhr +.. section: IDLE +IDLE now has an 'IDLE Dark' built-in text color theme. It is more or less +IDLE Classic inverted, with a cobalt blue background. Strings, comments, +keywords, ... are still green, red, orange, ... . To use it with IDLEs +released before November 2015, hit the 'Save as New Custom Theme' button and +enter a new name, such as 'Custom Dark'. The custom theme will work with +any IDLE release, and can be modified. +.. +.. bpo: 25224 +.. date: 9351 +.. nonce: 5Llwo4 +.. section: IDLE +README.txt is now an idlelib index for IDLE developers and curious users. +The previous user content is now in the IDLE doc chapter. 'IDLE' now means +'Integrated Development and Learning Environment'. +.. +.. bpo: 24820 +.. date: 9350 +.. nonce: ZUz9Fn +.. section: IDLE +Users can now set breakpoint colors in Settings -> Custom Highlighting. +Original patch by Mark Roseman. +.. +.. bpo: 24972 +.. date: 9349 +.. nonce: uc0uNo +.. section: IDLE +Inactive selection background now matches active selection background, as +configured by users, on all systems. Found items are now always highlighted +on Windows. Initial patch by Mark Roseman. +.. +.. bpo: 24570 +.. date: 9348 +.. nonce: s3EkNn +.. section: IDLE +Idle: make calltip and completion boxes appear on Macs affected by a tk +regression. Initial patch by Mark Roseman. +.. +.. bpo: 24988 +.. date: 9347 +.. nonce: tXqq4T +.. section: IDLE +Idle ScrolledList context menus (used in debugger) now work on Mac Aqua. +Patch by Mark Roseman. +.. +.. bpo: 24801 +.. date: 9346 +.. nonce: -bj_Ou +.. section: IDLE +Make right-click for context menu work on Mac Aqua. Patch by Mark Roseman. +.. +.. bpo: 25173 +.. date: 9345 +.. nonce: EZzrPg +.. section: IDLE +Associate tkinter messageboxes with a specific widget. For Mac OSX, make +them a 'sheet'. Patch by Mark Roseman. +.. +.. bpo: 25198 +.. date: 9344 +.. nonce: -j_BV7 +.. section: IDLE +Enhance the initial html viewer now used for Idle Help. Properly indent +fixed-pitch text (patch by Mark Roseman). Give code snippet a very +Sphinx-like light blueish-gray background. Re-use initial width and height +set by users for shell and editor. When the Table of Contents (TOC) menu is +used, put the section header at the top of the screen. +.. +.. bpo: 25225 +.. date: 9343 +.. nonce: 9pvdq6 +.. section: IDLE +Condense and rewrite Idle doc section on text colors. +.. +.. bpo: 21995 +.. date: 9342 +.. nonce: C5Rmzx +.. section: IDLE +Explain some differences between IDLE and console Python. +.. +.. bpo: 22820 +.. date: 9341 +.. nonce: hix_8X +.. section: IDLE +Explain need for *print* when running file from Idle editor. +.. +.. bpo: 25224 +.. date: 9340 +.. nonce: UVMYQq +.. section: IDLE +Doc: augment Idle feature list and no-subprocess section. +.. +.. bpo: 25219 +.. date: 9339 +.. nonce: 8_9DYg +.. section: IDLE +Update doc for Idle command line options. Some were missing and notes were +not correct. +.. +.. bpo: 24861 +.. date: 9338 +.. nonce: Ecg2yT +.. section: IDLE +Most of idlelib is private and subject to change. Use idleib.idle.* to start +Idle. See idlelib.__init__.__doc__. +.. +.. bpo: 25199 +.. date: 9337 +.. nonce: ih7yY3 +.. section: IDLE +Idle: add synchronization comments for future maintainers. +.. +.. bpo: 16893 +.. date: 9336 +.. nonce: bZtPgJ +.. section: IDLE +Replace help.txt with help.html for Idle doc display. The new +idlelib/help.html is rstripped Doc/build/html/library/idle.html. It looks +better than help.txt and will better document Idle as released. The tkinter +html viewer that works for this file was written by Mark Roseman. The now +unused EditorWindow.HelpDialog class and helt.txt file are deprecated. +.. +.. bpo: 24199 +.. date: 9335 +.. nonce: VKnZEv +.. section: IDLE +Deprecate unused idlelib.idlever with possible removal in 3.6. +.. +.. bpo: 24790 +.. date: 9334 +.. nonce: hD1hlj +.. section: IDLE +Remove extraneous code (which also create 2 & 3 conflicts). +.. +.. bpo: 22558 +.. date: 9333 +.. nonce: Pk02YC +.. section: Documentation +Add remaining doc links to source code for Python-coded modules. Patch by +Yoni Lavi. +.. +.. bpo: 12067 +.. date: 9332 +.. nonce: nLD2M- +.. section: Documentation +Rewrite Comparisons section in the Expressions chapter of the language +reference. Some of the details of comparing mixed types were incorrect or +ambiguous. NotImplemented is only relevant at a lower level than the +Expressions chapter. Added details of comparing range() objects, and default +behaviour and consistency suggestions for user-defined classes. Patch from +Andy Maier. +.. +.. bpo: 24952 +.. date: 9331 +.. nonce: RHhFPE +.. section: Documentation +Clarify the default size argument of stack_size() in the "threading" and +"_thread" modules. Patch from Mattip. +.. +.. bpo: 23725 +.. date: 9330 +.. nonce: 49TZ5f +.. section: Documentation +Overhaul tempfile docs. Note deprecated status of mktemp. Patch from +Zbigniew Jędrzejewski-Szmek. +.. +.. bpo: 24808 +.. date: 9329 +.. nonce: MGjc3F +.. section: Documentation +Update the types of some PyTypeObject fields. Patch by Joseph Weston. +.. +.. bpo: 22812 +.. date: 9328 +.. nonce: kLCF0G +.. section: Documentation +Fix unittest discovery examples. Patch from Pam McA'Nulty. +.. +.. bpo: 25449 +.. date: 9327 +.. nonce: MP6KNs +.. section: Tests +Added tests for OrderedDict subclasses. +.. +.. bpo: 25099 +.. date: 9326 +.. nonce: tJQOWx +.. section: Tests +Make test_compileall not fail when an entry on sys.path cannot be written to +(commonly seen in administrative installs on Windows). +.. +.. bpo: 23919 +.. date: 9325 +.. nonce: vJnjaq +.. section: Tests +Prevents assert dialogs appearing in the test suite. +.. +.. bpo: 0 +.. date: 9324 +.. nonce: X-Bk5l +.. section: Tests +``PCbuild\rt.bat`` now accepts an unlimited number of arguments to pass +along to regrtest.py. Previously there was a limit of 9. +.. +.. bpo: 24915 +.. date: 9323 +.. nonce: PgD3Cx +.. section: Build +Add LLVM support for PGO builds and use the test suite to generate the +profile data. Initial patch by Alecsandru Patrascu of Intel. +.. +.. bpo: 24910 +.. date: 9322 +.. nonce: ZZdfl0 +.. section: Build +Windows MSIs now have unique display names. +.. +.. bpo: 24986 +.. date: 9321 +.. nonce: 1WyXeU +.. section: Build +It is now possible to build Python on Windows without errors when external +libraries are not available. +.. +.. bpo: 25450 +.. date: 9320 +.. nonce: X4xlWf +.. section: Windows +Updates shortcuts to start Python in installation directory. +.. +.. bpo: 25164 +.. date: 9319 +.. nonce: FHVOOA +.. section: Windows +Changes default all-users install directory to match per-user directory. +.. +.. bpo: 25143 +.. date: 9318 +.. nonce: hmxsia +.. section: Windows +Improves installer error messages for unsupported platforms. +.. +.. bpo: 25163 +.. date: 9317 +.. nonce: uCRe8H +.. section: Windows +Display correct directory in installer when using non-default settings. +.. +.. bpo: 25361 +.. date: 9316 +.. nonce: GETaSY +.. section: Windows +Disables use of SSE2 instructions in Windows 32-bit build +.. +.. bpo: 25089 +.. date: 9315 +.. nonce: n_YJgw +.. section: Windows +Adds logging to installer for case where launcher is not selected on +upgrade. +.. +.. bpo: 25165 +.. date: 9314 +.. nonce: aUTN1e +.. section: Windows +Windows uninstallation should not remove launcher if other versions remain +.. +.. bpo: 25112 +.. date: 9313 +.. nonce: frdKij +.. section: Windows +py.exe launcher is missing icons +.. +.. bpo: 25102 +.. date: 9312 +.. nonce: 6y6Akl +.. section: Windows +Windows installer does not precompile for -O or -OO. +.. +.. bpo: 25081 +.. date: 9311 +.. nonce: dcRCTO +.. section: Windows +Makes Back button in installer go back to upgrade page when upgrading. +.. +.. bpo: 25091 +.. date: 9310 +.. nonce: 1u-VKy +.. section: Windows +Increases font size of the installer. +.. +.. bpo: 25126 +.. date: 9309 +.. nonce: ANx3DW +.. section: Windows +Clarifies that the non-web installer will download some components. +.. +.. bpo: 25213 +.. date: 9308 +.. nonce: KGmXoe +.. section: Windows +Restores requestedExecutionLevel to manifest to disable UAC virtualization. +.. +.. bpo: 25022 +.. date: 9307 +.. nonce: vAt_zr +.. section: Windows +Removed very outdated PC/example_nt/ directory. +.. +.. bpo: 25440 +.. date: 9306 +.. nonce: 5xhyGr +.. section: Tools/Demos +Fix output of python-config --extension-suffix. + +.. date: 2025-11-04-19-20-05 +.. gh-issue: 140849 +.. nonce: YjB2ZZ +.. release date: 2025-11-18 +.. section: Windows +Update bundled liblzma to version 5.8.1. +.. +.. date: 2025-11-12-12-54-28 +.. gh-issue: 141442 +.. nonce: 50dS3P +.. section: Tools/Demos +The iOS testbed now correctly handles test arguments that contain spaces. +.. +.. date: 2025-10-29-15-20-19 +.. gh-issue: 140702 +.. nonce: ZXtW8h +.. section: Tools/Demos +The iOS testbed app will now expose the ``GITHUB_ACTIONS`` environment +variable to iOS apps being tested. +.. +.. date: 2025-09-21-10-30-08 +.. gh-issue: 139198 +.. nonce: Fm7NfU +.. section: Tools/Demos +Remove ``Tools/scripts/checkpip.py`` script. +.. +.. date: 2025-09-20-20-31-54 +.. gh-issue: 139188 +.. nonce: zfcxkW +.. section: Tools/Demos +Remove ``Tools/tz/zdump.py`` script. +.. +.. date: 2025-10-23-16-39-49 +.. gh-issue: 140482 +.. nonce: ZMtyeD +.. section: Tests +Preserve and restore the state of ``stty echo`` as part of the test +environment. +.. +.. date: 2025-10-15-00-52-12 +.. gh-issue: 140082 +.. nonce: fpET50 +.. section: Tests +Update ``python -m test`` to set ``FORCE_COLOR=1`` when being run with color +enabled so that :mod:`unittest` which is run by it with redirected output +will output in color. +.. +.. date: 2025-07-09-21-45-51 +.. gh-issue: 136442 +.. nonce: jlbklP +.. section: Tests +Use exitcode ``1`` instead of ``5`` if :func:`unittest.TestCase.setUpClass` +raises an exception +.. +.. date: 2025-08-15-23-08-44 +.. gh-issue: 137836 +.. nonce: b55rhh +.. section: Security +Add support of the "plaintext" element, RAWTEXT elements "xmp", "iframe", +"noembed" and "noframes", and optionally RAWTEXT element "noscript" in +:class:`html.parser.HTMLParser`. +.. +.. date: 2025-06-28-13-23-53 +.. gh-issue: 136063 +.. nonce: aGk0Jv +.. section: Security +:mod:`email.message`: ensure linear complexity for legacy HTTP parameters +parsing. Patch by Bénédikt Tran. +.. +.. date: 2025-05-30-22-33-27 +.. gh-issue: 136065 +.. nonce: bu337o +.. section: Security +Fix quadratic complexity in :func:`os.path.expandvars`. +.. +.. date: 2025-11-14-16-24-20 +.. gh-issue: 141497 +.. nonce: L_CxDJ +.. section: Library +:mod:`ipaddress`: ensure that the methods :meth:`IPv4Network.hosts() +` and :meth:`IPv6Network.hosts() +` always return an iterator. +.. +.. date: 2025-11-13-14-51-30 +.. gh-issue: 140938 +.. nonce: kXsHHv +.. section: Library +The :func:`statistics.stdev` and :func:`statistics.pstdev` functions now +raise a :exc:`ValueError` when the input contains an infinity or a NaN. +.. +.. date: 2025-11-12-15-42-47 +.. gh-issue: 124111 +.. nonce: hTw4OE +.. section: Library +Updated Tcl threading configuration in :mod:`_tkinter` to assume that +threads are always available in Tcl 9 and later. +.. +.. date: 2025-11-12-01-49-03 +.. gh-issue: 137109 +.. nonce: D6sq2B +.. section: Library +The :mod:`os.fork` and related forking APIs will no longer warn in the +common case where Linux or macOS platform APIs return the number of threads +in a process and find the answer to be 1 even when a +:func:`os.register_at_fork` ``after_in_parent=`` callback (re)starts a +thread. +.. +.. date: 2025-11-10-01-47-18 +.. gh-issue: 141314 +.. nonce: baaa28 +.. section: Library +Fix assertion failure in :meth:`io.TextIOWrapper.tell` when reading files +with standalone carriage return (``\r``) line endings. +.. +.. date: 2025-11-09-18-55-13 +.. gh-issue: 141311 +.. nonce: qZ3swc +.. section: Library +Fix assertion failure in :func:`!io.BytesIO.readinto` and undefined behavior +arising when read position is above capcity in :class:`io.BytesIO`. +.. +.. date: 2025-11-08-13-03-10 +.. gh-issue: 87710 +.. nonce: XJeZlP +.. section: Library +:mod:`mimetypes`: Update mime type for ``.ai`` files to ``application/pdf``. +.. +.. date: 2025-11-07-12-25-46 +.. gh-issue: 85524 +.. nonce: 9SWFIC +.. section: Library +Update ``io.FileIO.readall``, an implementation of +:meth:`io.RawIOBase.readall`, to follow :class:`io.IOBase` guidelines and +raise :exc:`io.UnsupportedOperation` when a file is in "w" mode rather than +:exc:`OSError` +.. +.. date: 2025-11-06-15-11-50 +.. gh-issue: 141141 +.. nonce: tgIfgH +.. section: Library +Fix a thread safety issue with :func:`base64.b85decode`. Contributed by +Benel Tayar. +.. +.. date: 2025-11-04-20-08-41 +.. gh-issue: 141018 +.. nonce: d_oyOI +.. section: Library +:mod:`mimetypes`: Update ``.exe``, ``.dll``, ``.rtf`` and (when +``strict=False``) ``.jpg`` to their correct IANA mime type. +.. +.. date: 2025-11-04-15-40-35 +.. gh-issue: 137969 +.. nonce: 9VZQVt +.. section: Library +Fix :meth:`annotationlib.ForwardRef.evaluate` returning +:class:`~annotationlib.ForwardRef` objects which don't update with new +globals. +.. +.. date: 2025-11-04-12-16-13 +.. gh-issue: 75593 +.. nonce: EFVhKR +.. section: Library +Add support of :term:`path-like objects ` and +:term:`bytes-like objects ` in :func:`wave.open`. +.. +.. date: 2025-11-03-16-23-54 +.. gh-issue: 140797 +.. nonce: DuFEeR +.. section: Library +The undocumented :class:`!re.Scanner` class now forbids regular expressions +containing capturing groups in its lexicon patterns. Patterns using +capturing groups could previously lead to crashes with segmentation fault. +Use non-capturing groups (?:...) instead. +.. +.. date: 2025-11-03-05-38-31 +.. gh-issue: 125115 +.. nonce: jGS8MN +.. section: Library +Refactor the :mod:`pdb` parsing issue so positional arguments can pass +through intuitively. +.. +.. date: 2025-11-02-19-23-32 +.. gh-issue: 140815 +.. nonce: McEG-T +.. section: Library +:mod:`faulthandler` now detects if a frame or a code object is invalid or +freed. Patch by Victor Stinner. +.. +.. date: 2025-11-02-11-46-00 +.. gh-issue: 100218 +.. nonce: 9Ezfdq +.. section: Library +Correctly set :attr:`~OSError.errno` when :func:`socket.if_nametoindex` or +:func:`socket.if_indextoname` raise an :exc:`OSError`. Patch by Bénédikt +Tran. +.. +.. date: 2025-11-02-09-37-22 +.. gh-issue: 140734 +.. nonce: f8gST9 +.. section: Library +:mod:`multiprocessing`: fix off-by-one error when checking the length of a +temporary socket file path. Patch by Bénédikt Tran. +.. +.. date: 2025-11-01-14-44-09 +.. gh-issue: 140873 +.. nonce: kfuc9B +.. section: Library +Add support of non-:term:`descriptor` callables in +:func:`functools.singledispatchmethod`. +.. +.. date: 2025-11-01-00-36-14 +.. gh-issue: 140874 +.. nonce: eAWt3K +.. section: Library +Bump the version of pip bundled in ensurepip to version 25.3 +.. +.. date: 2025-11-01-00-34-53 +.. gh-issue: 140826 +.. nonce: JEDd7U +.. section: Library +Now :class:`!winreg.HKEYType` objects are compared by their underlying +Windows registry handle value instead of their object identity. +.. +.. date: 2025-10-31-16-25-13 +.. gh-issue: 140808 +.. nonce: XBiQ4j +.. section: Library +The internal class ``mailbox._ProxyFile`` is no longer a parameterized +generic. +.. +.. date: 2025-10-31-15-06-26 +.. gh-issue: 140691 +.. nonce: JzHGtg +.. section: Library +In :mod:`urllib.request`, when opening a FTP URL fails because a data +connection cannot be made, the control connection's socket is now closed to +avoid a :exc:`ResourceWarning`. +.. +.. date: 2025-10-31-13-57-55 +.. gh-issue: 103847 +.. nonce: VM7TnW +.. section: Library +Fix hang when cancelling process created by +:func:`asyncio.create_subprocess_exec` or +:func:`asyncio.create_subprocess_shell`. Patch by Kumar Aditya. +.. +.. date: 2025-10-30-15-33-07 +.. gh-issue: 137821 +.. nonce: 8_Iavt +.. section: Library +Convert ``_json`` module to use Argument Clinic. Patched by Yoonho Hann. +.. +.. date: 2025-10-30-12-36-19 +.. gh-issue: 140790 +.. nonce: _3T6-N +.. section: Library +Initialize all Pdb's instance variables in ``__init__``, remove some +hasattr/getattr +.. +.. date: 2025-10-29-16-53-00 +.. gh-issue: 140766 +.. nonce: CNagKF +.. section: Library +Add :func:`enum.show_flag_values` and ``enum.bin`` to ``enum.__all__``. +.. +.. date: 2025-10-29-16-12-41 +.. gh-issue: 120057 +.. nonce: qGj5Dl +.. section: Library +Add :func:`os.reload_environ` to ``os.__all__``. +.. +.. date: 2025-10-29-09-40-10 +.. gh-issue: 140741 +.. nonce: L13UCV +.. section: Library +Fix ``profiling.sampling.sample()`` incorrectly handling a +:exc:`FileNotFoundError` or :exc:`PermissionError`. +.. +.. date: 2025-10-28-17-43-51 +.. gh-issue: 140228 +.. nonce: 8kfHhO +.. section: Library +Avoid making unnecessary filesystem calls for frozen modules in +:mod:`linecache` when the global module cache is not present. +.. +.. date: 2025-10-28-02-46-56 +.. gh-issue: 139946 +.. nonce: aN3_uY +.. section: Library +Error and warning keywords in ``argparse.ArgumentParser`` messages are now +colorized when color output is enabled, fixing a visual inconsistency in +which they remained plain text while other output was colorized. +.. +.. date: 2025-10-27-18-29-42 +.. gh-issue: 140590 +.. nonce: LT9HHn +.. section: Library +Fix arguments checking for the :meth:`!functools.partial.__setstate__` that +may lead to internal state corruption and crash. Patch by Sergey Miryanov. +.. +.. date: 2025-10-27-16-01-41 +.. gh-issue: 125434 +.. nonce: qy0uRA +.. section: Library +Display thread name in :mod:`faulthandler` on Windows. Patch by Victor +Stinner. +.. +.. date: 2025-10-27-13-49-31 +.. gh-issue: 140634 +.. nonce: ULng9G +.. section: Library +Fix a reference counting bug in :meth:`!os.sched_param.__reduce__`. +.. +.. date: 2025-10-27-00-40-49 +.. gh-issue: 140650 +.. nonce: DYJPJ9 +.. section: Library +Fix an issue where closing :class:`io.BufferedWriter` could crash if the +closed attribute raised an exception on access or could not be converted to +a boolean. +.. +.. date: 2025-10-26-16-24-12 +.. gh-issue: 140633 +.. nonce: ioayC1 +.. section: Library +Ignore :exc:`AttributeError` when setting a module's ``__file__`` attribute +when loading an extension module packaged as Apple Framework. +.. +.. date: 2025-10-25-22-55-07 +.. gh-issue: 140601 +.. nonce: In3MlS +.. section: Library +:func:`xml.etree.ElementTree.iterparse` now emits a :exc:`ResourceWarning` +when the iterator is not explicitly closed and was opened with a filename. +This helps developers identify and fix resource leaks. Patch by Osama +Abdelkader. +.. +.. date: 2025-10-25-21-26-16 +.. gh-issue: 140593 +.. nonce: OxlLc9 +.. section: Library +:mod:`xml.parsers.expat`: Fix a memory leak that could affect users with +:meth:`~xml.parsers.expat.xmlparser.ElementDeclHandler` set to a custom +element declaration handler. Patch by Sebastian Pipping. +.. +.. date: 2025-10-25-21-04-00 +.. gh-issue: 140607 +.. nonce: oOZGxS +.. section: Library +Inside :meth:`io.RawIOBase.read`, validate that the count of bytes returned +by :meth:`io.RawIOBase.readinto` is valid (inside the provided buffer). +.. +.. date: 2025-10-23-19-39-16 +.. gh-issue: 138162 +.. nonce: Znw5DN +.. section: Library +Fix :class:`logging.LoggerAdapter` with ``merge_extra=True`` and without the +*extra* argument. +.. +.. date: 2025-10-23-13-42-15 +.. gh-issue: 140481 +.. nonce: XKxWpq +.. section: Library +Improve error message when trying to iterate a Tk widget, image or font. +.. +.. date: 2025-10-23-12-12-22 +.. gh-issue: 138774 +.. nonce: mnh2gU +.. section: Library +:func:`ast.unparse` now generates full source code when handling +:class:`ast.Interpolation` nodes that do not have a specified source. +.. +.. date: 2025-10-22-20-52-13 +.. gh-issue: 140474 +.. nonce: xIWlip +.. section: Library +Fix memory leak in :class:`array.array` when creating arrays from an empty +:class:`str` and the ``u`` type code. +.. +.. date: 2025-10-22-12-56-57 +.. gh-issue: 140448 +.. nonce: GsEkXD +.. section: Library +Change the default of ``suggest_on_error`` to ``True`` in +``argparse.ArgumentParser``. +.. +.. date: 2025-10-21-15-54-13 +.. gh-issue: 137530 +.. nonce: ZyIVUH +.. section: Library +:mod:`dataclasses` Fix annotations for generated ``__init__`` methods by +replacing the annotations that were in-line in the generated source code +with ``__annotate__`` functions attached to the methods. +.. +.. date: 2025-10-20-12-33-49 +.. gh-issue: 140348 +.. nonce: SAKnQZ +.. section: Library +Fix regression in Python 3.14.0 where using the ``|`` operator on a +:class:`typing.Union` object combined with an object that is not a type +would raise an error. +.. +.. date: 2025-10-18-15-20-25 +.. gh-issue: 76007 +.. nonce: SNUzRq +.. section: Library +:mod:`decimal`: Deprecate ``__version__`` and replace with +:data:`decimal.SPEC_VERSION`. +.. +.. date: 2025-10-18-14-30-21 +.. gh-issue: 76007 +.. nonce: peEgcr +.. section: Library +Deprecate ``__version__`` from :mod:`imaplib`. Patch by Hugo van Kemenade. +.. +.. date: 2025-10-17-23-58-11 +.. gh-issue: 140272 +.. nonce: lhY8uS +.. section: Library +Fix memory leak in the :meth:`!clear` method of the :mod:`dbm.gnu` database. +.. +.. date: 2025-10-17-20-42-38 +.. gh-issue: 129117 +.. nonce: X9jr4p +.. section: Library +:mod:`unicodedata`: Add :func:`~unicodedata.isxidstart` and +:func:`~unicodedata.isxidcontinue` functions to check whether a character +can start or continue a `Unicode Standard Annex #31 +`_ identifier. +.. +.. date: 2025-10-17-12-33-01 +.. gh-issue: 140251 +.. nonce: esM-OX +.. section: Library +Colorize the default import statement ``import asyncio`` in asyncio REPL. +.. +.. date: 2025-10-16-22-49-16 +.. gh-issue: 140212 +.. nonce: llBNd0 +.. section: Library +Calendar's HTML formatting now accepts year and month as options. +Previously, running ``python -m calendar -t html 2025 10`` would result in +an error message. It now generates an HTML document displaying the calendar +for the specified month. Contributed by Pål Grønås Drange. +.. +.. date: 2025-10-16-17-17-20 +.. gh-issue: 135801 +.. nonce: faH3fa +.. section: Library +Improve filtering by module in :func:`warnings.warn_explicit` if no *module* +argument is passed. It now tests the module regular expression in the +warnings filter not only against the filename with ``.py`` stripped, but +also against module names constructed starting from different parent +directories of the filename (with ``/__init__.py``, ``.py`` and, on Windows, +``.pyw`` stripped). +.. +.. date: 2025-10-16-16-10-11 +.. gh-issue: 139707 +.. nonce: zR6Qtn +.. section: Library +Improve :exc:`ModuleNotFoundError` error message when a :term:`standard +library` module is missing. +.. +.. date: 2025-10-15-21-42-13 +.. gh-issue: 140041 +.. nonce: _Fka2j +.. section: Library +Fix import of :mod:`ctypes` on Android and Cygwin when ABI flags are +present. +.. +.. date: 2025-10-15-20-47-04 +.. gh-issue: 140120 +.. nonce: 3gffZq +.. section: Library +Fixed a memory leak in :mod:`hmac` when it was using the hacl-star backend. +Discovered by ``@ashm-dev`` using AddressSanitizer. +.. +.. date: 2025-10-15-17-23-51 +.. gh-issue: 140141 +.. nonce: j2mUDB +.. section: Library +The :py:class:`importlib.metadata.PackageNotFoundError` traceback raised +when ``importlib.metadata.Distribution.from_name`` cannot discover a +distribution no longer includes a transient :exc:`StopIteration` exception +trace. +Contributed by Bartosz Sławecki in :gh:`140142`. +.. +.. date: 2025-10-15-15-10-34 +.. gh-issue: 140166 +.. nonce: NtxRez +.. section: Library +:mod:`mimetypes`: Per the `IANA assignment +`_, update +the MIME type for the ``.texi`` and ``.texinfo`` file formats to +``application/texinfo``, instead of ``application/x-texinfo``. +.. +.. date: 2025-10-15-02-26-50 +.. gh-issue: 140135 +.. nonce: 54JYfM +.. section: Library +Speed up :meth:`io.RawIOBase.readall` by using PyBytesWriter API (about 4x +faster) +.. +.. date: 2025-10-14-20-27-06 +.. gh-issue: 76007 +.. nonce: 2NcUbo +.. section: Library +:mod:`zlib`: Deprecate ``__version__`` and schedule for removal in Python +3.20. +.. +.. date: 2025-10-13-11-25-41 +.. gh-issue: 136702 +.. nonce: uvLGK1 +.. section: Library +:mod:`encodings`: Deprecate passing a non-ascii *encoding* name to +:func:`encodings.normalize_encoding` and schedule removal of support for +Python 3.17. +.. +.. date: 2025-10-11-09-07-06 +.. gh-issue: 139940 +.. nonce: g54efZ +.. section: Library +Print clearer error message when using ``pdb`` to attach to a non-existing +process. +.. +.. date: 2025-10-02-22-29-00 +.. gh-issue: 139462 +.. nonce: VZXUHe +.. section: Library +When a child process in a :class:`concurrent.futures.ProcessPoolExecutor` +terminates abruptly, the resulting traceback will now tell you the PID and +exit code of the terminated process. Contributed by Jonathan Berg. +.. +.. date: 2025-09-30-12-52-54 +.. gh-issue: 63161 +.. nonce: mECM1A +.. section: Library +Fix :func:`tokenize.detect_encoding`. Support non-UTF-8 shebang and comments +if non-UTF-8 encoding is specified. Detect decoding error for non-UTF-8 +encoding. Detect null bytes in source code. +.. +.. date: 2025-09-25-20-16-10 +.. gh-issue: 101828 +.. nonce: yTxJlJ +.. section: Library +Fix ``'shift_jisx0213'``, ``'shift_jis_2004'``, ``'euc_jisx0213'`` and +``'euc_jis_2004'`` codecs truncating null chars as they were treated as part +of multi-character sequences. +.. +.. date: 2025-09-23-09-46-46 +.. gh-issue: 139246 +.. nonce: pzfM-w +.. section: Library +fix: paste zero-width in default repl width is wrong. +.. +.. date: 2025-09-18-21-25-41 +.. gh-issue: 83714 +.. nonce: TQjDWZ +.. section: Library +Implement :func:`os.statx` on Linux kernel versions 4.11 and later with +glibc versions 2.28 and later. Contributed by Jeffrey Bosboom and Victor +Stinner. +.. +.. date: 2025-09-15-21-03-11 +.. gh-issue: 138891 +.. nonce: oZFdtR +.. section: Library +Fix ``SyntaxError`` when ``inspect.get_annotations(f, eval_str=True)`` is +called on a function annotated with a :pep:`646` ``star_expression`` +.. +.. date: 2025-09-13-12-19-17 +.. gh-issue: 138859 +.. nonce: PxjIoN +.. section: Library +Fix generic type parameterization raising a :exc:`TypeError` when omitting a +:class:`ParamSpec` that has a default which is not a list of types. +.. +.. date: 2025-09-12-09-34-37 +.. gh-issue: 138764 +.. nonce: mokHoY +.. section: Library +Prevent :func:`annotationlib.call_annotate_function` from calling +``__annotate__`` functions that don't support ``VALUE_WITH_FAKE_GLOBALS`` in +a fake globals namespace with empty globals. +Make ``FORWARDREF`` and ``STRING`` annotations fall back to using ``VALUE`` +annotations in the case that neither their own format, nor +``VALUE_WITH_FAKE_GLOBALS`` are supported. +.. +.. date: 2025-09-11-15-03-37 +.. gh-issue: 138775 +.. nonce: w7rnSx +.. section: Library +Use of ``python -m`` with :mod:`base64` has been fixed to detect input from +a terminal so that it properly notices EOF. +.. +.. date: 2025-09-03-20-18-39 +.. gh-issue: 98896 +.. nonce: tjez89 +.. section: Library +Fix a failure in multiprocessing resource_tracker when SharedMemory names +contain colons. Patch by Rani Pinchuk. +.. +.. date: 2025-09-03-18-26-07 +.. gh-issue: 138425 +.. nonce: cVE9Ho +.. section: Library +Fix partial evaluation of :class:`annotationlib.ForwardRef` objects which +rely on names defined as globals. +.. +.. date: 2025-08-26-08-17-56 +.. gh-issue: 138151 +.. nonce: I6CdAk +.. section: Library +In :mod:`annotationlib`, improve evaluation of forward references to +nonlocal variables that are not yet defined when the annotations are +initially evaluated. +.. +.. date: 2025-08-15-20-35-30 +.. gh-issue: 69528 +.. nonce: qc-Eh_ +.. section: Library +The :attr:`~io.FileIO.mode` attribute of files opened in the ``'wb+'`` mode +is now ``'wb+'`` instead of ``'rb+'``. +.. +.. date: 2025-08-11-04-52-18 +.. gh-issue: 137627 +.. nonce: Ku5Yi2 +.. section: Library +Speed up :meth:`csv.Sniffer.sniff` delimiter detection by up to 1.6x. +.. +.. date: 2025-07-14-09-33-17 +.. gh-issue: 55531 +.. nonce: Gt2e12 +.. section: Library +:mod:`encodings`: Improve :func:`~encodings.normalize_encoding` performance +by implementing the function in C using the private +``_Py_normalize_encoding`` which has been modified to make lowercase +conversion optional. +.. +.. date: 2025-07-01-04-57-57 +.. gh-issue: 136057 +.. nonce: 4-t596 +.. section: Library +Fixed the bug in :mod:`pdb` and :mod:`bdb` where ``next`` and ``step`` can't +go over the line if a loop exists in the line. +.. +.. date: 2025-06-29-22-01-00 +.. gh-issue: 133390 +.. nonce: I1DW_3 +.. section: Library +Support table, index, trigger, view, column, function, and schema completion +for :mod:`sqlite3`'s :ref:`command-line interface `. +.. +.. date: 2025-06-10-18-02-29 +.. gh-issue: 135307 +.. nonce: fXGrcK +.. section: Library +:mod:`email`: Fix exception in ``set_content()`` when encoding text and +max_line_length is set to ``0`` or ``None`` (unlimited). +.. +.. date: 2025-05-10-15-10-54 +.. gh-issue: 133789 +.. nonce: I-ZlUX +.. section: Library +Fix unpickling of :mod:`pathlib` objects that were pickled in Python 3.13. +.. +.. date: 2025-05-07-22-09-28 +.. gh-issue: 133601 +.. nonce: 9kUL3P +.. section: Library +Remove deprecated :func:`!typing.no_type_check_decorator`. +.. +.. date: 2025-04-18-18-08-05 +.. gh-issue: 132686 +.. nonce: 6kV_Gs +.. section: Library +Add parameters *inherit_class_doc* and *fallback_to_class_doc* for +:func:`inspect.getdoc`. +.. +.. date: 2025-03-12-18-57-10 +.. gh-issue: 131116 +.. nonce: uTpwXZ +.. section: Library +:func:`inspect.getdoc` now correctly returns an inherited docstring on +:class:`~functools.cached_property` objects if none is given in a subclass. +.. +.. date: 2025-03-04-17-19-26 +.. gh-issue: 130693 +.. nonce: Kv01r8 +.. section: Library +Add support for ``-nolinestop``, and ``-strictlimits`` options to +:meth:`!tkinter.Text.search`. Also add the :meth:`!tkinter.Text.search_all` +method for ``-all`` and ``-overlap`` options. +.. +.. date: 2024-08-08-12-39-36 +.. gh-issue: 122255 +.. nonce: J_gU8Y +.. section: Library +In the :mod:`linecache` module and in the Python implementation of the +:mod:`warnings` module, a ``DeprecationWarning`` is issued when +``mod.__loader__`` differs from ``mod.__spec__.loader`` (like in the C +implementation of the :mod:`!warnings` module). +.. +.. date: 2024-06-26-16-16-43 +.. gh-issue: 121011 +.. nonce: qW54eh +.. section: Library +:func:`math.log` now supports arbitrary large integer-like arguments in the +same way as arbitrary large integer arguments. +.. +.. date: 2024-05-28-17-14-30 +.. gh-issue: 119668 +.. nonce: RrIGpn +.. section: Library +Publicly expose and document :class:`importlib.machinery.NamespacePath`. +.. +.. date: 2023-03-21-10-59-40 +.. gh-issue: 102431 +.. nonce: eUDnf4 +.. section: Library +Clarify constraints for "logical" arguments in methods of +:class:`decimal.Context`. +.. +.. date: 2019-06-02-13-56-16 +.. gh-issue: 81313 +.. nonce: axawSH +.. section: Library +Add the :mod:`math.integer` module (:pep:`791`). +.. +.. date: 2025-11-15-01-21-00 +.. gh-issue: 141579 +.. nonce: aB7cD9 +.. section: Core and Builtins +Fix :func:`sys.activate_stack_trampoline` to properly support the +``perf_jit`` backend. Patch by Pablo Galindo. +.. +.. date: 2025-11-14-16-25-15 +.. gh-issue: 114203 +.. nonce: n3tlQO +.. section: Core and Builtins +Skip locking if object is already locked by two-mutex critical section. +.. +.. date: 2025-11-14-00-19-45 +.. gh-issue: 141528 +.. nonce: VWdax1 +.. section: Core and Builtins +Suggest using :meth:`concurrent.interpreters.Interpreter.close` instead of +the private ``_interpreters.destroy`` function when warning about remaining +subinterpreters. Patch by Sergey Miryanov. +.. +.. date: 2025-11-11-13-40-45 +.. gh-issue: 141367 +.. nonce: I5KY7F +.. section: Core and Builtins +Specialize ``CALL_LIST_APPEND`` instruction only for lists, not for list +subclasses, to avoid unnecessary deopt. Patch by Mikhail Efimov. +.. +.. date: 2025-11-10-23-07-06 +.. gh-issue: 141312 +.. nonce: H-58GB +.. section: Core and Builtins +Fix the assertion failure in the ``__setstate__`` method of the range +iterator when a non-integer argument is passed. Patch by Sergey Miryanov. +.. +.. date: 2025-11-05-19-50-37 +.. gh-issue: 140643 +.. nonce: QCEOqG +.. section: Core and Builtins +Add support for ```` and ```` frames to +:mod:`!profiling.sampling` output to denote active garbage collection and +calls to native code. +.. +.. date: 2025-11-04-12-18-06 +.. gh-issue: 140942 +.. nonce: GYns6n +.. section: Library +Add ``.cjs`` to :mod:`mimetypes` to give CommonJS modules a MIME type of +``application/node``. +.. +.. date: 2025-11-04-04-57-24 +.. gh-issue: 140479 +.. nonce: lwQ2v2 +.. section: Core and Builtins +Update JIT compilation to use LLVM 21 at build time. +.. +.. date: 2025-11-03-17-21-38 +.. gh-issue: 140939 +.. nonce: FVboAw +.. section: Core and Builtins +Fix memory leak when :class:`bytearray` or :class:`bytes` is formated with +the ``%*b`` format with a large width that results in a :exc:`MemoryError`. +.. +.. date: 2025-11-02-15-28-33 +.. gh-issue: 140260 +.. nonce: JNzlGz +.. section: Library +Fix :mod:`struct` data race in endian table initialization with +subinterpreters. Patch by Shamil Abdulaev. +.. +.. date: 2025-11-02-12-47-38 +.. gh-issue: 140530 +.. nonce: S934bp +.. section: Core and Builtins +Fix a reference leak when ``raise exc from cause`` fails. Patch by Bénédikt +Tran. +.. +.. date: 2025-10-31-14-03-42 +.. gh-issue: 90344 +.. nonce: gvZigO +.. section: Library +Replace :class:`io.IncrementalNewlineDecoder` with non incremental newline +decoders in codebase where :meth:`!io.IncrementalNewlineDecoder.decode` was +being called once. +.. +.. date: 2025-10-29-20-59-10 +.. gh-issue: 140373 +.. nonce: -uoaPP +.. section: Core and Builtins +Correctly emit ``PY_UNWIND`` event when generator object is closed. Patch by +Mikhail Efimov. +.. +.. date: 2025-10-29-11-31-59 +.. gh-issue: 140729 +.. nonce: t9JsNt +.. section: Core and Builtins +Fix pickling error in the sampling profiler when using +``concurrent.futures.ProcessPoolExecutor`` script can not be properly +pickled and executed in worker processes. +.. +.. date: 2025-10-25-21-31-43 +.. gh-issue: 131527 +.. nonce: V-JVNP +.. section: Core and Builtins +Dynamic borrow checking for stackrefs is added to ``Py_STACKREF_DEBUG`` +mode. Patch by Mikhail Efimov. +.. +.. date: 2025-10-25-17-36-46 +.. gh-issue: 140576 +.. nonce: kj0SCY +.. section: Core and Builtins +Fixed crash in :func:`tokenize.generate_tokens` in case of specific +incorrect input. Patch by Mikhail Efimov. +.. +.. date: 2025-10-25-07-25-52 +.. gh-issue: 140544 +.. nonce: lwjtQe +.. section: Core and Builtins +Speed up accessing interpreter state by caching it in a thread local +variable. Patch by Kumar Aditya. +.. +.. date: 2025-10-24-20-42-33 +.. gh-issue: 140551 +.. nonce: -9swrl +.. section: Core and Builtins +Fixed crash in :class:`dict` if :meth:`dict.clear` is called at the lookup +stage. Patch by Mikhail Efimov and Inada Naoki. +.. +.. date: 2025-10-24-20-16-42 +.. gh-issue: 140517 +.. nonce: cqun-K +.. section: Core and Builtins +Fixed a reference leak when iterating over the result of :func:`map` with +``strict=True`` when the input iterables have different lengths. Patch by +Mikhail Efimov. +.. +.. date: 2025-10-24-14-29-12 +.. gh-issue: 133467 +.. nonce: A5d6TM +.. section: Core and Builtins +Fix race when updating :attr:`!type.__bases__` that could allow a read of +:attr:`!type.__base__` to observe an inconsistent value on the free threaded +build. +.. +.. date: 2025-10-23-16-05-50 +.. gh-issue: 140471 +.. nonce: Ax_aXn +.. section: Core and Builtins +Fix potential buffer overflow in :class:`ast.AST` node initialization when +encountering malformed :attr:`~ast.AST._fields` containing non-:class:`str`. +.. +.. date: 2025-10-22-23-26-37 +.. gh-issue: 140443 +.. nonce: wT5i1A +.. section: Library +The logarithm functions (such as :func:`math.log10` and :func:`math.log`) +may now produce slightly different results for extremely large integers that +cannot be converted to floats without overflow. These results are generally +more accurate, with reduced worst-case error and a tighter overall error +distribution. +.. +.. date: 2025-10-22-17-22-22 +.. gh-issue: 140431 +.. nonce: m8D_A- +.. section: Core and Builtins +Fix a crash in Python's :term:`garbage collector ` due +to partially initialized :term:`coroutine` objects when coroutine origin +tracking depth is enabled (:func:`sys.set_coroutine_origin_tracking_depth`). +.. +.. date: 2025-10-22-12-48-05 +.. gh-issue: 140476 +.. nonce: F3-d1P +.. section: Core and Builtins +Optimize :c:func:`PySet_Add` for :class:`frozenset` in :term:`free threaded +` build. +.. +.. date: 2025-10-22-11-30-16 +.. gh-issue: 135904 +.. nonce: 3WE5oW +.. section: Core and Builtins +Add special labels to the assembly created during stencil creation to +support relocations that the native object file format does not support. +Specifically, 19 bit branches for AArch64 in Mach-O object files. +.. +.. date: 2025-10-21-09-20-03 +.. gh-issue: 140398 +.. nonce: SoABwJ +.. section: Library +Fix memory leaks in :mod:`readline` functions +:func:`~readline.read_init_file`, :func:`~readline.read_history_file`, +:func:`~readline.write_history_file`, and +:func:`~readline.append_history_file` when :c:func:`PySys_Audit` fails. +.. +.. date: 2025-10-21-06-51-50 +.. gh-issue: 140406 +.. nonce: 0gJs8M +.. section: Core and Builtins +Fix memory leak when an object's :meth:`~object.__hash__` method returns an +object that isn't an :class:`int`. +.. +.. date: 2025-10-20-11-24-36 +.. gh-issue: 140358 +.. nonce: UQuKdV +.. section: Core and Builtins +Restore elapsed time and unreachable object count in GC debug output. These +were inadvertently removed during a refactor of ``gc.c``. The debug log now +again reports elapsed collection time and the number of unreachable objects. +Contributed by Pål Grønås Drange. +.. +.. date: 2025-10-19-10-32-28 +.. gh-issue: 136895 +.. nonce: HfsEh0 +.. section: Core and Builtins +Update JIT compilation to use LLVM 20 at build time. +.. +.. date: 2025-10-18-21-50-44 +.. gh-issue: 139109 +.. nonce: 9QQOzN +.. section: Core and Builtins +A new tracing frontend for the JIT compiler has been implemented. Patch by +Ken Jin. Design for CPython by Ken Jin, Mark Shannon and Brandt Bucher. +.. +.. date: 2025-10-18-21-29-45 +.. gh-issue: 140306 +.. nonce: xS5CcS +.. section: Core and Builtins +Fix memory leaks in cross-interpreter channel operations and shared +namespace handling. +.. +.. date: 2025-10-18-19-52-20 +.. gh-issue: 116738 +.. nonce: NLJW0L +.. section: Core and Builtins +Make _suggestions module thread-safe on the :term:`free threaded ` build. +.. +.. date: 2025-10-18-18-08-36 +.. gh-issue: 140301 +.. nonce: m-2HxC +.. section: Core and Builtins +Fix memory leak of ``PyConfig`` in subinterpreters. +.. +.. date: 2025-10-17-20-23-19 +.. gh-issue: 140257 +.. nonce: 8Txmem +.. section: Core and Builtins +Fix data race between interpreter_clear() and take_gil() on eval_breaker +during finalization with daemon threads. +.. +.. date: 2025-10-17-18-03-12 +.. gh-issue: 139951 +.. nonce: IdwM2O +.. section: Core and Builtins +Fixes a regression in GC performance for a growing heap composed mostly of +small tuples. +* Counts number of actually tracked objects, instead of trackable objects. +This ensures that untracking tuples has the desired effect of reducing GC overhead. +* Does not track most untrackable tuples during creation. +This prevents large numbers of small tuples causing excessive GCs. +.. +.. date: 2025-10-17-14-38-10 +.. gh-issue: 140253 +.. nonce: gCqFaL +.. section: Core and Builtins +Wrong placement of a double-star pattern inside a mapping pattern now throws +a specialized syntax error. Contributed by Bartosz Sławecki in :gh:`140253`. +.. +.. date: 2025-10-16-21-47-00 +.. gh-issue: 140104 +.. nonce: A8SQIm +.. section: Core and Builtins +Fix a bug with exception handling in the JIT. Patch by Ken Jin. Bug reported +by Daniel Diniz. +.. +.. date: 2025-10-15-17-12-32 +.. gh-issue: 140149 +.. nonce: cy1m3d +.. section: Core and Builtins +Speed up parsing bytes literals concatenation by using PyBytesWriter API and +a single memory allocation (about 3x faster). +.. +.. date: 2025-10-15-00-21-40 +.. gh-issue: 140061 +.. nonce: J0XeDV +.. section: Core and Builtins +Fixing the checking of whether an object is uniquely referenced to ensure +free-threaded compatibility. Patch by Sergey Miryanov. +.. +.. date: 2025-10-14-20-18-31 +.. gh-issue: 140080 +.. nonce: 8ROjxW +.. section: Core and Builtins +Fix hang during finalization when attempting to call :mod:`atexit` handlers +under no memory. +.. +.. date: 2025-10-14-18-24-16 +.. gh-issue: 139871 +.. nonce: SWtuUz +.. section: Core and Builtins +Update :class:`bytearray` to use a :class:`bytes` under the hood as its +buffer and add :meth:`bytearray.take_bytes` to take it out. +.. +.. date: 2025-10-14-17-07-37 +.. gh-issue: 140067 +.. nonce: ID2gOm +.. section: Core and Builtins +Fix memory leak in sub-interpreter creation. +.. +.. date: 2025-10-13-13-54-19 +.. gh-issue: 139914 +.. nonce: M-y_3E +.. section: Core and Builtins +Restore support for HP PA-RISC, which has an upwards-growing stack. +.. +.. date: 2025-10-12-01-12-12 +.. gh-issue: 139817 +.. nonce: PAn-8Z +.. section: Core and Builtins +Attribute ``__qualname__`` is added to :class:`typing.TypeAliasType`. Patch +by Mikhail Efimov. +.. +.. date: 2025-10-06-14-19-47 +.. gh-issue: 135801 +.. nonce: OhxEZS +.. section: Core and Builtins +Many functions related to compiling or parsing Python code, such as +:func:`compile`, :func:`ast.parse`, :func:`symtable.symtable`, and +:func:`importlib.abc.InspectLoader.source_to_code` now allow to specify the +module name. It is needed to unambiguous :ref:`filter ` +syntax warnings by module name. +.. +.. date: 2025-10-06-10-03-37 +.. gh-issue: 139640 +.. nonce: gY5oTb2 +.. section: Core and Builtins +:func:`ast.parse` no longer emits syntax warnings for +``return``/``break``/``continue`` in ``finally`` (see :pep:`765`) -- they +are only emitted during compilation. +.. +.. date: 2025-10-06-10-03-37 +.. gh-issue: 139640 +.. nonce: gY5oTb +.. section: Core and Builtins +Fix swallowing some syntax warnings in different modules if they +accidentally have the same message and are emitted from the same line. Fix +duplicated warnings in the ``finally`` block. +.. +.. date: 2025-10-03-17-51-43 +.. gh-issue: 139475 +.. nonce: _684ED +.. section: Core and Builtins +Changes in stackref debugging mode when ``Py_STACKREF_DEBUG`` is set. We use +the same pattern of refcounting for stackrefs as in production build. +.. +.. date: 2025-09-23-21-01-12 +.. gh-issue: 139269 +.. nonce: 1rIaxy +.. section: Core and Builtins +Fix undefined behavior when using unaligned store in JIT's ``patch_*`` +functions. +.. +.. date: 2025-09-15-13-06-11 +.. gh-issue: 138944 +.. nonce: PeCgLb +.. section: Core and Builtins +Fix :exc:`SyntaxError` message when invalid syntax appears on the same line +as a valid ``import ... as ...`` or ``from ... import ... as ...`` +statement. Patch by Brian Schubert. +.. +.. date: 2025-09-13-01-23-25 +.. gh-issue: 138857 +.. nonce: YQ5gdc +.. section: Core and Builtins +Improve :exc:`SyntaxError` message for ``case`` keyword placed outside +:keyword:`match` body. +.. +.. date: 2025-07-29-17-51-14 +.. gh-issue: 131253 +.. nonce: GpRjWy +.. section: Core and Builtins +Support the ``--enable-pystats`` build option for the free-threaded build. +.. +.. date: 2025-07-08-00-41-46 +.. gh-issue: 136327 +.. nonce: 7AiTb_ +.. section: Core and Builtins +Errors when calling functions with invalid values after ``*`` and ``**`` now +do not include the function name. Patch by Ilia Solin. +.. +.. date: 2025-06-24-13-12-58 +.. gh-issue: 134786 +.. nonce: MF0VVk +.. section: Core and Builtins +If :c:macro:`Py_TPFLAGS_MANAGED_DICT` and +:c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` are used, then +:c:macro:`Py_TPFLAGS_HAVE_GC` must be used as well. +.. +.. date: 2025-11-10-11-26-26 +.. gh-issue: 141341 +.. nonce: OsO6-y +.. section: C API +On Windows, rename the ``COMPILER`` macro to ``_Py_COMPILER`` to avoid name +conflicts. Patch by Victor Stinner. +.. +.. date: 2025-11-08-10-51-50 +.. gh-issue: 116146 +.. nonce: pCmx6L +.. section: C API +Add a new :c:func:`PyImport_CreateModuleFromInitfunc` C-API for creating a +module from a *spec* and *initfunc*. Patch by Itamar Oren. +.. +.. date: 2025-11-06-06-28-14 +.. gh-issue: 141042 +.. nonce: brOioJ +.. section: C API +Make qNaN in :c:func:`PyFloat_Pack2` and :c:func:`PyFloat_Pack4`, if while +conversion to a narrower precision floating-point format --- the remaining +after truncation payload will be zero. Patch by Sergey B Kirpichev. +.. +.. date: 2025-11-05-05-45-49 +.. gh-issue: 141004 +.. nonce: N9Ooh9 +.. section: C API +:c:macro:`!Py_MATH_El` and :c:macro:`!Py_MATH_PIl` are deprecated. +.. +.. date: 2025-11-05-04-38-16 +.. gh-issue: 141004 +.. nonce: rJL43P +.. section: C API +The :c:macro:`!Py_INFINITY` macro is :term:`soft deprecated`. +.. +.. date: 2025-10-26-16-45-28 +.. gh-issue: 140556 +.. nonce: s__Dae +.. section: C API +:pep:`793`: Add a new entry point for C extension modules, +``PyModExport_``. +.. +.. date: 2025-10-26-16-45-06 +.. gh-issue: 140487 +.. nonce: fGOqss +.. section: C API +Fix :c:macro:`Py_RETURN_NOTIMPLEMENTED` in limited C API 3.11 and older: +don't treat ``Py_NotImplemented`` as immortal. Patch by Victor Stinner. +.. +.. date: 2025-10-15-15-59-59 +.. gh-issue: 140153 +.. nonce: BO7sH4 +.. section: C API +Fix :c:func:`Py_REFCNT` definition on limited C API 3.11-3.13. Patch by +Victor Stinner. +.. +.. date: 2025-10-06-22-17-47 +.. gh-issue: 139653 +.. nonce: 6-1MOd +.. section: C API +Add :c:func:`PyUnstable_ThreadState_SetStackProtection` and +:c:func:`PyUnstable_ThreadState_ResetStackProtection` functions to set the +stack protection base address and stack protection size of a Python thread +state. Patch by Victor Stinner. +.. +.. date: 2025-10-31-13-20-16 +.. gh-issue: 140454 +.. nonce: gF6dCe +.. section: Build +When building the JIT, match the jit_stencils filename expectations in +Makefile with the generator script. This avoid needless JIT recompilation +during ``make install``. +.. +.. date: 2025-10-29-12-30-38 +.. gh-issue: 140768 +.. nonce: ITYrzw +.. section: Build +Warn when the WASI SDK version doesn't match what's supported. +.. +.. date: 2025-10-25-08-07-06 +.. gh-issue: 140513 +.. nonce: 6OhLTs +.. section: Build +Generate a clear compilation error when ``_Py_TAIL_CALL_INTERP`` is enabled +but either ``preserve_none`` or ``musttail`` is not supported. +.. +.. date: 2025-10-22-12-44-07 +.. gh-issue: 140475 +.. nonce: OhzQbR +.. section: Build +Support WASI SDK 25. +.. +.. date: 2025-10-17-11-33-45 +.. gh-issue: 140239 +.. nonce: _k-GgW +.. section: Build +Check ``statx`` availability only on Linux (including Android). +.. +.. date: 2025-10-16-11-30-53 +.. gh-issue: 140189 +.. nonce: YCrUyt +.. section: Build +iOS builds were added to CI. +.. +.. date: 2025-08-10-22-28-06 +.. gh-issue: 137618 +.. nonce: FdNvIE +.. section: Build +``PYTHON_FOR_REGEN`` now requires Python 3.10 to Python 3.15. Patch by Adam +Turner. + +.. date: 2024-11-16-22-08-41 +.. gh-issue: 126911 +.. nonce: HchCZZ +.. release date: 2024-11-19 +.. section: Windows +Update credits command output. +.. +.. date: 2024-11-12-22-31-13 +.. gh-issue: 118973 +.. nonce: _lfxW6 +.. section: Windows +Ensures the experimental free-threaded install includes the ``_tkinter`` +module. The optional Tcl/Tk component must also be installed in order for +the module to work. +.. +.. date: 2024-11-07-20-42-31 +.. gh-issue: 126497 +.. nonce: EARpd- +.. section: Windows +Fixes venv failure due to missing redirector executables in experimental +free-threaded installs. +.. +.. date: 2024-10-29-20-09-52 +.. gh-issue: 126074 +.. nonce: 83ZzZs +.. section: Windows +Removed unnecessary DLLs from Windows embeddable package +.. +.. date: 2024-10-29-19-48-03 +.. gh-issue: 125315 +.. nonce: jdB9qN +.. section: Windows +Avoid crashing in :mod:`platform` due to slow WMI calls on some Windows +machines. +.. +.. date: 2024-10-29-09-39-06 +.. gh-issue: 126084 +.. nonce: 3wAL8o +.. section: Windows +Fix venvwlauncher to launch pythonw instead of python so no extra console +window is created. +.. +.. date: 2024-10-23-17-24-23 +.. gh-issue: 125842 +.. nonce: m3EF9E +.. section: Windows +Fix a :exc:`SystemError` when :func:`sys.exit` is called with ``0xffffffff`` +on Windows. +.. +.. date: 2024-10-15-21-28-43 +.. gh-issue: 125550 +.. nonce: hmGWCP +.. section: Windows +Enable the :ref:`launcher` to detect Python 3.14 installs from the Windows +Store. +.. +.. date: 2024-09-07-15-16-24 +.. gh-issue: 123803 +.. nonce: J9VNQU +.. section: Windows +All Windows code pages are now supported as "cpXXX" codecs on Windows. +.. +.. date: 2024-11-13-22-23-36 +.. gh-issue: 126807 +.. nonce: vpaWuN +.. section: Tools/Demos +Fix extraction warnings in :program:`pygettext.py` caused by mistaking +function definitions for function calls. +.. +.. date: 2024-10-30-13-59-07 +.. gh-issue: 126167 +.. nonce: j5cCWE +.. section: Tools/Demos +The iOS testbed was modified so that it can be used by third-party projects +for testing purposes. +.. +.. date: 2024-11-17-16-56-48 +.. gh-issue: 126909 +.. nonce: 60VTxW +.. section: Tests +Fix test_os extended attribute tests to work on filesystems with 1 KiB xattr +size limit. +.. +.. date: 2024-10-21-14-10-56 +.. gh-issue: 125730 +.. nonce: kcWbvI +.. section: Tests +Change ``make test`` to not run GUI tests by default. Use ``make ci`` to run +tests with GUI tests instead. +.. +.. date: 2024-09-30-22-52-44 +.. gh-issue: 124295 +.. nonce: VZy5kx +.. section: Tests +Add translation tests to the :mod:`argparse` module. +.. +.. date: 2024-11-13-11-09-12 +.. gh-issue: 126623 +.. nonce: TO7NnR +.. section: Security +Upgrade libexpat to 2.6.4 +.. +.. date: 2024-11-18-15-33-25 +.. gh-issue: 85957 +.. nonce: 8gT3B- +.. section: Library +Add missing MIME types for images with RFCs: emf, fits, g3fax, jp2, jpm, +jpx, t38, tiff-fx and wmf. Patch by Hugo van Kemenade. +.. +.. date: 2024-11-17-01-14-59 +.. gh-issue: 126920 +.. nonce: s8-f_L +.. section: Library +Fix the ``prefix`` and ``exec_prefix`` keys from +:py:func:`sysconfig.get_config_vars` incorrectly having the same value as +:py:const:`sys.base_prefix` and :py:const:`sys.base_exec_prefix`, +respectively, inside virtual environments. They now accurately reflect +:py:const:`sys.prefix` and :py:const:`sys.exec_prefix`. +.. +.. date: 2024-11-14-22-25-49 +.. gh-issue: 67877 +.. nonce: G9hw0w +.. section: Library +Fix memory leaks when :mod:`regular expression ` matching terminates +abruptly, either because of a signal or because memory allocation fails. +.. +.. date: 2024-11-14-13-16-20 +.. gh-issue: 125063 +.. nonce: kJ-WnH +.. section: Library +:mod:`marshal` now supports :class:`slice` objects. The marshal format +version was increased to 5. +.. +.. date: 2024-11-13-22-25-57 +.. gh-issue: 126789 +.. nonce: lKzlc7 +.. section: Library +Fixed the values of :py:func:`sysconfig.get_config_vars`, +:py:func:`sysconfig.get_paths`, and their siblings when the :py:mod:`site` +initialization happens after :py:mod:`sysconfig` has built a cache for +:py:func:`sysconfig.get_config_vars`. +.. +.. date: 2024-11-13-20-03-18 +.. gh-issue: 126188 +.. nonce: RJLKk- +.. section: Library +Update bundled pip to 24.3.1 +.. +.. date: 2024-11-12-21-43-12 +.. gh-issue: 126766 +.. nonce: oi2KJ7 +.. section: Library +Fix issue where :func:`urllib.request.url2pathname` failed to discard two +leading slashes introducing an empty authority section. +.. +.. date: 2024-11-11-14-52-21 +.. gh-issue: 126705 +.. nonce: 0W7jFW +.. section: Library +Allow :class:`os.PathLike` to be a base for Protocols. +.. +.. date: 2024-11-11-13-24-22 +.. gh-issue: 126699 +.. nonce: ONGbMd +.. section: Library +Allow :class:`collections.abc.AsyncIterator` to be a base for Protocols. +.. +.. date: 2024-11-11-13-00-21 +.. gh-issue: 126654 +.. nonce: 4gfP2y +.. section: Library +Fix crash when non-dict was passed to several functions in ``_interpreters`` +module. +.. +.. date: 2024-11-10-18-14-51 +.. gh-issue: 104745 +.. nonce: zAa5Ke +.. section: Library +Limit starting a patcher (from :func:`unittest.mock.patch` or +:func:`unittest.mock.patch.object`) more than once without stopping it +.. +.. date: 2024-11-09-10-31-10 +.. gh-issue: 126595 +.. nonce: A-7MyC +.. section: Library +Fix a crash when instantiating :class:`itertools.count` with an initial +count of :data:`sys.maxsize` on debug builds. Patch by Bénédikt Tran. +.. +.. date: 2024-11-08-17-05-10 +.. gh-issue: 120423 +.. nonce: 7rdLVV +.. section: Library +Fix issue where :func:`urllib.request.pathname2url` mishandled Windows paths +with embedded forward slashes. +.. +.. date: 2024-11-08-11-06-14 +.. gh-issue: 126565 +.. nonce: dFFO22 +.. section: Library +Improve performances of :meth:`zipfile.Path.open` for non-reading modes. +.. +.. date: 2024-11-07-22-41-47 +.. gh-issue: 126505 +.. nonce: iztYE1 +.. section: Library +Fix bugs in compiling case-insensitive :mod:`regular expressions ` with +character classes containing non-BMP characters: upper-case non-BMP +character did was ignored and the ASCII flag was ignored when matching a +character range whose upper bound is beyond the BMP region. +.. +.. date: 2024-11-07-01-40-11 +.. gh-issue: 117378 +.. nonce: o9O5uM +.. section: Library +Fixed the :mod:`multiprocessing` ``"forkserver"`` start method forkserver +process to correctly inherit the parent's :data:`sys.path` during the +importing of :func:`multiprocessing.set_forkserver_preload` modules in the +same manner as :data:`sys.path` is configured in workers before executing +work items. +This bug caused some forkserver module preloading to silently fail to +preload. This manifested as a performance degradation in child processes when +the ``sys.path`` was required due to additional repeated work in every +worker. +It could also have a side effect of ``""`` remaining in :data:`sys.path` +during forkserver preload imports instead of the absolute path from +:func:`os.getcwd` at multiprocessing import time used in the worker +``sys.path``. +The ``sys.path`` differences between phases in the child process could +potentially have caused preload to import incorrect things from the wrong +location. We are unaware of that actually having happened in practice. +.. +.. date: 2024-11-06-23-40-28 +.. gh-issue: 125679 +.. nonce: Qq9xF5 +.. section: Library +The :class:`multiprocessing.Lock` and :class:`multiprocessing.RLock` +``repr`` values no longer say "unknown" on macOS. +.. +.. date: 2024-11-06-18-30-50 +.. gh-issue: 126476 +.. nonce: F1wh3c +.. section: Library +Raise :class:`calendar.IllegalMonthError` (now a subclass of +:class:`IndexError`) for :func:`calendar.month` when the input month is not +correct. +.. +.. date: 2024-11-06-13-41-38 +.. gh-issue: 126489 +.. nonce: toaf-0 +.. section: Library +The Python implementation of :mod:`pickle` no longer calls +:meth:`pickle.Pickler.persistent_id` for the result of +:meth:`!persistent_id`. +.. +.. date: 2024-11-05-11-28-45 +.. gh-issue: 126451 +.. nonce: XJMtqz +.. section: Library +Register the :class:`contextvars.Context` type to +:class:`collections.abc.Mapping`. +.. +.. date: 2024-11-05-09-54-49 +.. gh-issue: 126175 +.. nonce: spnjJr +.. section: Library +Add ``msg``, ``doc``, ``pos``, ``lineno`` and ``colno`` attributes to +:exc:`tomllib.TOMLDecodeError`. Deprecate instantiating with free-form +arguments. +.. +.. date: 2024-11-04-22-53-09 +.. gh-issue: 89416 +.. nonce: YVQaas +.. section: Library +Add :rfc:`9559` MIME types for Matroska audiovisual container formats. Patch +by Hugo van Kemenade. +.. +.. date: 2024-11-04-16-40-02 +.. gh-issue: 126417 +.. nonce: OWPqn0 +.. section: Library +Register the :class:`!multiprocessing.managers.DictProxy` and +:class:`!multiprocessing.managers.ListProxy` types in +:mod:`multiprocessing.managers` to :class:`collections.abc.MutableMapping` +and :class:`collections.abc.MutableSequence`, respectively. +.. +.. date: 2024-11-04-13-16-18 +.. gh-issue: 126390 +.. nonce: Cxvqa5 +.. section: Library +Add support for returning intermixed options and non-option arguments in +order in :func:`getopt.gnu_getopt`. +.. +.. date: 2024-11-03-23-25-07 +.. gh-issue: 126374 +.. nonce: Xu_THP +.. section: Library +Add support for options with optional arguments in the :mod:`getopt` module. +.. +.. date: 2024-11-03-14-43-51 +.. gh-issue: 126363 +.. nonce: Xus7vU +.. section: Library +Speed up pattern parsing in :meth:`pathlib.Path.glob` by skipping creation +of a :class:`pathlib.Path` object for the pattern. +.. +.. date: 2024-11-03-10-48-07 +.. gh-issue: 126353 +.. nonce: ChDzot +.. section: Library +:func:`asyncio.get_event_loop` now does not implicitly creates an event +loop. It now raises a :exc:`RuntimeError` if there is no set event loop. +Patch by Kumar Aditya. +.. +.. date: 2024-11-03-09-42-42 +.. gh-issue: 126313 +.. nonce: EFP6Dl +.. section: Library +Fix an issue in :func:`curses.napms` when :func:`curses.initscr` has not yet +been called. Patch by Bénédikt Tran. +.. +.. date: 2024-11-02-19-20-44 +.. gh-issue: 126303 +.. nonce: yVvyWB +.. section: Library +Fix pickling and copying of :class:`os.sched_param` objects. +.. +.. date: 2024-11-01-14-31-41 +.. gh-issue: 126138 +.. nonce: yTniOG +.. section: Library +Fix a use-after-free crash on :class:`asyncio.Task` objects whose underlying +coroutine yields an object that implements an evil +:meth:`~object.__getattribute__`. Patch by Nico Posada. +.. +.. date: 2024-11-01-10-35-49 +.. gh-issue: 120057 +.. nonce: YWy81Q +.. section: Library +Replace the ``os.environ.refresh()`` method with a new +:func:`os.reload_environ` function. Patch by Victor Stinner. +.. +.. date: 2024-10-31-14-06-28 +.. gh-issue: 126220 +.. nonce: uJAJCU +.. section: Library +Fix crash in :class:`!cProfile.Profile` and :class:`!_lsprof.Profiler` when +their callbacks were directly called with 0 arguments. +.. +.. date: 2024-10-30-23-59-36 +.. gh-issue: 126212 +.. nonce: _9uYjT +.. section: Library +Fix issue where :func:`urllib.request.pathname2url` and +:func:`~urllib.request.url2pathname` removed slashes from Windows DOS drive +paths and URLs. +.. +.. date: 2024-10-30-23-42-44 +.. gh-issue: 126223 +.. nonce: k2qooc +.. section: Library +Raise a :exc:`UnicodeEncodeError` instead of a :exc:`SystemError` upon +calling :func:`!_interpreters.create` with an invalid Unicode character. +.. +.. date: 2024-10-30-20-45-17 +.. gh-issue: 126205 +.. nonce: CHEmtx +.. section: Library +Fix issue where :func:`urllib.request.pathname2url` generated URLs beginning +with four slashes (rather than two) when given a Windows UNC path. +.. +.. date: 2024-10-30-00-12-22 +.. gh-issue: 126156 +.. nonce: BOSqv0 +.. section: Library +Improved performances of creating :py:class:`~http.cookies.Morsel` objects +by a factor of 3.8x. +.. +.. date: 2024-10-29-11-45-44 +.. gh-issue: 126105 +.. nonce: cOL-R6 +.. section: Library +Fix a crash in :mod:`ast` when the :attr:`ast.AST._fields` attribute is +deleted. +.. +.. date: 2024-10-29-10-58-52 +.. gh-issue: 126106 +.. nonce: rlF798 +.. section: Library +Fixes a possible ``NULL`` pointer dereference in :mod:`ssl`. +.. +.. date: 2024-10-29-10-38-28 +.. gh-issue: 126080 +.. nonce: qKRBuo +.. section: Library +Fix a use-after-free crash on :class:`asyncio.Task` objects for which the +underlying event loop implements an evil :meth:`~object.__getattribute__`. +Reported by Nico-Posada. Patch by Bénédikt Tran. +.. +.. date: 2024-10-29-07-24-52 +.. gh-issue: 125322 +.. nonce: sstOM- +.. section: Library +Correct detection of complex numbers support in libffi. +.. +.. date: 2024-10-28-22-35-22 +.. gh-issue: 126083 +.. nonce: TuI--n +.. section: Library +Fixed a reference leak in :class:`asyncio.Task` objects when reinitializing +the same object with a non-``None`` context. Patch by Nico Posada. +.. +.. date: 2024-10-28-11-33-59 +.. gh-issue: 126068 +.. nonce: Pdznm_ +.. section: Library +Fix exceptions in the :mod:`argparse` module so that only error messages for +ArgumentError and ArgumentTypeError are now translated. ArgumentError is now +only used for command line errors, not for logical errors in the program. +TypeError is now raised instead of ValueError for some logical errors. +.. +.. date: 2024-10-28-01-24-52 +.. gh-issue: 125413 +.. nonce: Jat5kq +.. section: Library +Add :meth:`!pathlib.Path.scandir` method to efficiently fetch directory +children and their file attributes. This is a trivial wrapper of +:func:`os.scandir`. +.. +.. date: 2024-10-26-12-50-48 +.. gh-issue: 125984 +.. nonce: d4vp5_ +.. section: Library +Fix use-after-free crashes on :class:`asyncio.Future` objects for which the +underlying event loop implements an evil :meth:`~object.__getattribute__`. +Reported by Nico-Posada. Patch by Bénédikt Tran. +.. +.. date: 2024-10-25-20-52-15 +.. gh-issue: 125926 +.. nonce: pp8rtZ +.. section: Library +Fix :func:`urllib.parse.urljoin` for base URI with undefined authority. +Although :rfc:`3986` only specify reference resolution for absolute base +URI, :func:`!urljoin` should continue to return sensible result for relative +base URI. +.. +.. date: 2024-10-25-11-13-24 +.. gh-issue: 125969 +.. nonce: YvbrTr +.. section: Library +Fix an out-of-bounds crash when an evil :meth:`asyncio.loop.call_soon` +mutates the length of the internal callbacks list. Patch by Bénédikt Tran. +.. +.. date: 2024-10-25-10-53-56 +.. gh-issue: 125966 +.. nonce: eOCYU_ +.. section: Library +Fix a use-after-free crash in :meth:`asyncio.Future.remove_done_callback`. +Patch by Bénédikt Tran. +.. +.. date: 2024-10-24-14-08-10 +.. gh-issue: 125789 +.. nonce: eaiAMw +.. section: Library +Fix possible crash when mutating list of callbacks returned by +:attr:`!asyncio.Future._callbacks`. It now always returns a new copy in C +implementation :mod:`!_asyncio`. Patch by Kumar Aditya. +.. +.. date: 2024-10-24-13-40-20 +.. gh-issue: 126916 +.. nonce: MAgz6D +.. section: Library +Allow the *initial* parameter of :func:`functools.reduce` to be passed as a +keyword argument. Patch by Sayandip Dutta. +.. +.. date: 2024-10-24-10-49-47 +.. gh-issue: 124452 +.. nonce: eqTRgx +.. section: Library +Fix an issue in :meth:`email.policy.EmailPolicy.header_source_parse` and +:meth:`email.policy.Compat32.header_source_parse` that introduced spurious +leading whitespaces into header values when the header includes a newline +character after the header name delimiter (``:``) and before the value. +.. +.. date: 2024-10-23-20-44-30 +.. gh-issue: 117941 +.. nonce: Y9jdlW +.. section: Library +:class:`!argparse.BooleanOptionalAction` now rejects option names starting +with ``--no-``. +.. +.. date: 2024-10-23-17-45-40 +.. gh-issue: 125884 +.. nonce: 41E_PD +.. section: Library +Fixed the bug for :mod:`pdb` where it can't set breakpoints on functions +with certain annotations. +.. +.. date: 2024-10-22-13-28-00 +.. gh-issue: 125355 +.. nonce: zssHm_ +.. section: Library +Fix several bugs in :meth:`argparse.ArgumentParser.parse_intermixed_args`. +* The parser no longer changes temporarily during parsing. +* Default values are not processed twice. +* Required mutually exclusive groups containing positional arguments are now supported. +* The missing arguments report now includes the names of all required optional and positional arguments. +* Unknown options can be intermixed with positional arguments in parse_known_intermixed_args(). +.. +.. date: 2024-10-21-13-52-37 +.. gh-issue: 125767 +.. nonce: 0kK4lX +.. section: Library +:class:`super` objects are now :mod:`pickleable ` and :mod:`copyable +`. +.. +.. date: 2024-10-21-12-06-55 +.. gh-issue: 124969 +.. nonce: xiY8UP +.. section: Library +``locale.nl_langinfo(locale.ALT_DIGITS)`` now returns a string again. The +returned value consists of up to 100 semicolon-separated symbols. +.. +.. date: 2024-10-20-00-56-44 +.. gh-issue: 84850 +.. nonce: p5TeUB +.. section: Library +Remove :class:`!URLopener` and :class:`!FancyURLopener` classes from +:mod:`urllib.request`. They had previously raised :exc:`DeprecationWarning` +since Python 3.3. +.. +.. date: 2024-10-19-16-06-52 +.. gh-issue: 125666 +.. nonce: jGfdCP +.. section: Library +Avoid the exiting the interpreter if a null byte is given as input in the +new REPL. +.. +.. date: 2024-10-19-13-37-37 +.. gh-issue: 125710 +.. nonce: FyFAAr +.. section: Library +[Enum] fix hashable<->nonhashable comparisons for member values +.. +.. date: 2024-10-19-11-06-06 +.. gh-issue: 125631 +.. nonce: BlhVvR +.. section: Library +Restore ability to set :attr:`~pickle.Pickler.persistent_id` and +:attr:`~pickle.Unpickler.persistent_load` attributes of instances of the +:class:`!Pickler` and :class:`!Unpickler` classes in the :mod:`pickle` +module. +.. +.. date: 2024-10-19-01-30-40 +.. gh-issue: 125378 +.. nonce: WTosxX +.. section: Library +Fixed the bug in :mod:`pdb` where after a multi-line command, an empty line +repeats the first line of the multi-line command, instead of the full +command. +.. +.. date: 2024-10-18-09-51-29 +.. gh-issue: 125682 +.. nonce: vsj4cU +.. section: Library +Reject non-ASCII digits in the Python implementation of :func:`json.loads` +conforming to the JSON specification. +.. +.. date: 2024-10-18-08-58-10 +.. gh-issue: 125660 +.. nonce: sDdDqO +.. section: Library +Reject invalid unicode escapes for Python implementation of +:func:`json.loads`. +.. +.. date: 2024-10-17-20-36-06 +.. gh-issue: 52551 +.. nonce: EIVNYY +.. section: Library +Use :c:func:`!wcsftime` to implement :func:`time.strftime` on Windows. +.. +.. date: 2024-10-17-16-10-29 +.. gh-issue: 125259 +.. nonce: oMew0c +.. section: Library +Fix the notes removal logic for errors thrown in enum initialization. +.. +.. date: 2024-10-17-04-52-00 +.. gh-issue: 125633 +.. nonce: lMck06 +.. section: Library +Add function :func:`inspect.ispackage` to determine whether an object is a +:term:`package` or not. +.. +.. date: 2024-10-16-22-45-50 +.. gh-issue: 125614 +.. nonce: 3OEo_Q +.. section: Library +In the :data:`~annotationlib.Format.FORWARDREF` format of +:mod:`annotationlib`, fix bug where nested expressions were not returned as +:class:`annotationlib.ForwardRef` format. +.. +.. date: 2024-10-16-20-32-40 +.. gh-issue: 125590 +.. nonce: stHzOP +.. section: Library +Allow ``FrameLocalsProxy`` to delete and pop if the key is not a fast +variable. +.. +.. date: 2024-10-16-15-55-50 +.. gh-issue: 125600 +.. nonce: yMsJx0 +.. section: Library +Only show stale code warning in :mod:`pdb` when we display source code. +.. +.. date: 2024-10-16-04-50-53 +.. gh-issue: 125542 +.. nonce: vZJ-Ns +.. section: Library +Deprecate passing keyword-only *prefix_chars* argument to +:meth:`argparse.ArgumentParser.add_argument_group`. +.. +.. date: 2024-10-15-16-50-03 +.. gh-issue: 125541 +.. nonce: FfhmWo +.. section: Library +Pressing :kbd:`Ctrl-C` while blocked in :meth:`threading.Lock.acquire`, +:meth:`threading.RLock.acquire`, and :meth:`threading.Thread.join` now +interrupts the function call and raises a :exc:`KeyboardInterrupt` exception +on Windows, similar to how those functions behave on macOS and Linux. +.. +.. date: 2024-10-15-14-01-03 +.. gh-issue: 125519 +.. nonce: TqGh6a +.. section: Library +Improve traceback if :func:`importlib.reload` is called with an object that +is not a module. Patch by Alex Waygood. +.. +.. date: 2024-10-14-17-29-34 +.. gh-issue: 125451 +.. nonce: fmP3T9 +.. section: Library +Fix deadlock when :class:`concurrent.futures.ProcessPoolExecutor` shuts down +concurrently with an error when feeding a job to a worker process. +.. +.. date: 2024-10-14-02-07-44 +.. gh-issue: 125115 +.. nonce: IOf3ON +.. section: Library +Fixed a bug in :mod:`pdb` where arguments starting with ``-`` can't be +passed to the debugged script. +.. +.. date: 2024-10-13-15-04-58 +.. gh-issue: 125398 +.. nonce: UW7Ndv +.. section: Library +Fix the conversion of the :envvar:`!VIRTUAL_ENV` path in the activate script +in :mod:`venv` when running in Git Bash for Windows. +.. +.. date: 2024-10-11-00-40-13 +.. gh-issue: 125245 +.. nonce: 8vReM- +.. section: Library +Fix race condition when importing :mod:`collections.abc`, which could +incorrectly return an empty module. +.. +.. date: 2024-10-09-17-07-33 +.. gh-issue: 52551 +.. nonce: PBakSY +.. section: Library +Fix encoding issues in :func:`time.strftime`, the +:meth:`~datetime.datetime.strftime` method of the :mod:`datetime` classes +:class:`~datetime.datetime`, :class:`~datetime.date` and +:class:`~datetime.time` and formatting of these classes. Characters not +encodable in the current locale are now acceptable in the format string. +Surrogate pairs and sequence of surrogatescape-encoded bytes are no longer +recombinated. Embedded null character no longer terminates the format +string. +.. +.. date: 2024-10-04-22-43-48 +.. gh-issue: 124984 +.. nonce: xjMv9b +.. section: Library +Fixed thread safety in :mod:`ssl` in the free-threaded build. OpenSSL +operations are now protected by a per-object lock. +.. +.. date: 2024-09-28-02-03-04 +.. gh-issue: 124651 +.. nonce: bLBGtH +.. section: Library +Properly quote template strings in :mod:`venv` activation scripts. +.. +.. date: 2024-09-27-15-42-55 +.. gh-issue: 124694 +.. nonce: uUy32y +.. section: Library +We've added :class:`concurrent.futures.InterpreterPoolExecutor`, which +allows you to run code in multiple isolated interpreters. This allows you +to circumvent the limitations of CPU-bound threads (due to the GIL). Patch +by Eric Snow. +This addition is unrelated to :pep:`734`. +.. +.. date: 2024-09-27-13-10-17 +.. gh-issue: 58032 +.. nonce: 0aNAQ0 +.. section: Library +Deprecate the :class:`argparse.FileType` type converter. +.. +.. date: 2024-09-24-18-49-16 +.. gh-issue: 99749 +.. nonce: gBDJX7 +.. section: Library +Adds a feature to optionally enable suggestions for argument choices and +subparser names if mistyped by the user. +.. +.. date: 2024-09-24-18-16-59 +.. gh-issue: 58956 +.. nonce: 0wFrBR +.. section: Library +Fixed a bug in :mod:`pdb` where sometimes the breakpoint won't trigger if it +was set on a function which is already in the call stack. +.. +.. date: 2024-09-17-10-38-26 +.. gh-issue: 124111 +.. nonce: Hd53VN +.. section: Library +The tkinter module can now be built to use either the new version 9.0.0 of +Tcl/Tk or the latest release 8.6.15 of Tcl/Tk 8. Tcl/Tk 9 includes many +improvements, both to the Tcl language and to the appearance and utility of +the graphical user interface provided by Tk. +.. +.. date: 2024-09-07-13-57-49 +.. gh-issue: 80958 +.. nonce: fVYnqV +.. section: Library +unittest discovery supports PEP 420 namespace packages as start directory +again. +.. +.. date: 2024-08-28-19-27-35 +.. gh-issue: 123370 +.. nonce: SPZ9Ux +.. section: Library +Fix the canvas not clearing after running turtledemo clock. +.. +.. date: 2024-08-22-12-12-35 +.. gh-issue: 89083 +.. nonce: b6zFh0 +.. section: Library +Add :func:`uuid.uuid8` for generating UUIDv8 objects as specified in +:rfc:`9562`. Patch by Bénédikt Tran +.. +.. date: 2024-08-01-11-15-55 +.. gh-issue: 122549 +.. nonce: ztV4Kz +.. section: Library +Add :func:`platform.invalidate_caches` to invalidate cached results. +.. +.. date: 2024-07-23-02-24-50 +.. gh-issue: 120754 +.. nonce: nHb5mG +.. section: Library +Update unbounded ``read`` calls in :mod:`zipfile` to specify an explicit +``size`` putting a limit on how much data they may read. This also updates +handling around ZIP max comment size to match the standard instead of +reading comments that are one byte too long. +.. +.. date: 2024-07-02-15-56-42 +.. gh-issue: 121267 +.. nonce: yFBWkh +.. section: Library +Improve the performance of :mod:`tarfile` when writing files, by caching +user names and group names. +.. +.. date: 2024-06-06-04-06-05 +.. gh-issue: 70764 +.. nonce: 6511hw +.. section: Library +Fixed an issue where :func:`inspect.getclosurevars` would incorrectly +classify an attribute name as a global variable when the name exists both as +an attribute name and a global variable. +.. +.. date: 2024-06-05-19-09-36 +.. gh-issue: 118289 +.. nonce: moL9_d +.. section: Library +:func:`!posixpath.realpath` now raises :exc:`NotADirectoryError` when +*strict* mode is enabled and a non-directory path with a trailing slash is +supplied. +.. +.. date: 2024-06-02-11-48-19 +.. gh-issue: 119826 +.. nonce: N1obGa +.. section: Library +Always return an absolute path for :func:`os.path.abspath` on Windows. +.. +.. date: 2024-05-28-14-35-23 +.. gh-issue: 97850 +.. nonce: dCtjel +.. section: Library +Remove deprecated :func:`!pkgutil.get_loader` and +:func:`!pkgutil.find_loader`. +.. +.. date: 2024-05-13-10-09-41 +.. gh-issue: 118986 +.. nonce: -r4W9h +.. section: Library +Add :data:`!socket.IPV6_RECVERR` constant (available since Linux 2.2). +.. +.. date: 2024-03-16-13-38-27 +.. gh-issue: 116897 +.. nonce: UDQTjp +.. section: Library +Accepting objects with false values (like ``0`` and ``[]``) except empty +strings, byte-like objects and ``None`` in :mod:`urllib.parse` functions +:func:`~urllib.parse.parse_qsl` and :func:`~urllib.parse.parse_qs` is now +deprecated. +.. +.. date: 2023-10-26-16-36-22 +.. gh-issue: 101955 +.. nonce: Ixu3IF +.. section: Library +Fix SystemError when match regular expression pattern containing some +combination of possessive quantifier, alternative and capture group. +.. +.. date: 2022-10-15-10-18-20 +.. gh-issue: 71936 +.. nonce: MzJjc_ +.. section: Library +Fix a race condition in :class:`multiprocessing.pool.Pool`. +.. +.. bpo: 46128 +.. date: 2021-12-19-10-47-24 +.. nonce: Qv3EK1 +.. section: Library +Strip :class:`unittest.IsolatedAsyncioTestCase` stack frames from reported +stacktraces. +.. +.. date: 2020-05-19-01-12-47 +.. gh-issue: 84852 +.. nonce: FEjHJW +.. section: Library +Add MIME types for MS Embedded OpenType, OpenType Layout, TrueType, WOFF 1.0 +and 2.0 fonts. Patch by Sahil Prajapati and Hugo van Kemenade. +.. +.. date: 2024-11-09-19-43-10 +.. gh-issue: 126622 +.. nonce: YacfDc +.. section: Documentation +Added stub pages for removed modules explaining their removal, where to find +replacements, and linking to the last Python version that supported them. +Contributed by Ned Batchelder. +.. +.. date: 2024-10-10-23-46-54 +.. gh-issue: 125277 +.. nonce: QAby09 +.. section: Documentation +Require Sphinx 7.2.6 or later to build the Python documentation. Patch by +Adam Turner. +.. +.. date: 2023-03-28-22-24-45 +.. gh-issue: 60712 +.. nonce: So5uad +.. section: Documentation +Include the :class:`object` type in the lists of documented types. Change by +Furkan Onder and Martin Panter. +.. +.. date: 2024-11-13-17-18-13 +.. gh-issue: 126795 +.. nonce: _JBX9e +.. section: Core and Builtins +Increase the threshold for JIT code warmup. Depending on platform and +workload, this can result in performance gains of 1-9% and memory savings of +3-5%. +.. +.. date: 2024-11-12-19-24-00 +.. gh-issue: 126341 +.. nonce: 5SdAe1 +.. section: Core and Builtins +Now :exc:`ValueError` is raised instead of :exc:`SystemError` when trying to +iterate over a released :class:`memoryview` object. +.. +.. date: 2024-11-11-17-02-48 +.. gh-issue: 126688 +.. nonce: QiOXUi +.. section: Core and Builtins +Fix a crash when calling :func:`os.fork` on some operating systems, +including SerenityOS. +.. +.. date: 2024-11-09-16-10-22 +.. gh-issue: 126066 +.. nonce: 9zs4m4 +.. section: Library +Fix :mod:`importlib` to not write an incomplete .pyc files when a ulimit or +some other operating system mechanism is preventing the write to go through +fully. +.. +.. date: 2024-11-06-16-34-11 +.. gh-issue: 126222 +.. nonce: 9NBfTn +.. section: Core and Builtins +Do not include count of "peek" items in ``_PyUop_num_popped``. This ensures +that the correct number of items are popped from the stack when a micro-op +exits with an error. +.. +.. date: 2024-11-03-15-15-36 +.. gh-issue: 126366 +.. nonce: 8BBdGU +.. section: Core and Builtins +Fix crash when using ``yield from`` on an object that raises an exception in +its ``__iter__``. +.. +.. date: 2024-11-02-18-01-31 +.. gh-issue: 126209 +.. nonce: 2ZIhrS +.. section: Library +Fix an issue with ``skip_file_prefixes`` parameter which resulted in an +inconsistent behaviour between the C and Python implementations of +:func:`warnings.warn`. Patch by Daehee Kim. +.. +.. date: 2024-11-02-14-43-46 +.. gh-issue: 126312 +.. nonce: LMHzLT +.. section: Core and Builtins +Fix crash during garbage collection on an object frozen by :func:`gc.freeze` +on the free-threaded build. +.. +.. date: 2024-11-01-09-58-06 +.. gh-issue: 103951 +.. nonce: 6qduwj +.. section: Core and Builtins +Relax optimization requirements to allow fast attribute access to module +subclasses. +.. +.. date: 2024-10-31-21-49-00 +.. gh-issue: 126072 +.. nonce: o9k8Ns +.. section: Core and Builtins +Following :gh:`126101`, for :ref:`codeobjects` like lambda, annotation and +type alias, we no longer add ``None`` to its :attr:`~codeobject.co_consts`. +.. +.. date: 2024-10-30-18-16-10 +.. gh-issue: 126195 +.. nonce: 6ezBpr +.. section: Core and Builtins +Improve JIT performance by 1.4% on macOS Apple Silicon by using +platform-specific memory protection APIs. Patch by Diego Russo. +.. +.. date: 2024-10-29-15-17-31 +.. gh-issue: 126139 +.. nonce: B4OQ8a +.. section: Core and Builtins +Provide better error location when attempting to use a :term:`future +statement <__future__>` with an unknown future feature. +.. +.. date: 2024-10-29-10-37-39 +.. gh-issue: 126072 +.. nonce: XLKlxv +.. section: Core and Builtins +Add a new attribute in :attr:`~codeobject.co_flags` to indicate whether the +first item in :attr:`~codeobject.co_consts` is the docstring. If a code +object has no docstring, ``None`` will **NOT** be inserted. +.. +.. date: 2024-10-28-13-18-16 +.. gh-issue: 126076 +.. nonce: MebZuS +.. section: Core and Builtins +Relocated objects such as ``tuple``, ``bytes`` and ``str`` objects are +properly tracked by :mod:`tracemalloc` and its associated hooks. Patch by +Pablo Galindo. +.. +.. date: 2024-10-27-20-31-43 +.. gh-issue: 90370 +.. nonce: IP_W3a +.. section: Core and Builtins +Avoid temporary tuple creation for vararg in argument passing with Argument +Clinic generated code (if arguments either vararg or positional-only). +.. +.. date: 2024-10-26-23-50-03 +.. gh-issue: 126018 +.. nonce: Hq-qcM +.. section: Core and Builtins +Fix a crash in :func:`sys.audit` when passing a non-string as first argument +and Python was compiled in debug mode. +.. +.. date: 2024-10-26-13-32-48 +.. gh-issue: 126012 +.. nonce: 2KalhG +.. section: Core and Builtins +The :class:`memoryview` type now supports subscription, making it a +:term:`generic type`. +.. +.. date: 2024-10-25-15-56-14 +.. gh-issue: 125837 +.. nonce: KlCdgD +.. section: Core and Builtins +Adds :opcode:`LOAD_SMALL_INT` and :opcode:`!LOAD_CONST_IMMORTAL` +instructions. ``LOAD_SMALL_INT`` pushes a small integer equal to the +``oparg`` to the stack. ``LOAD_CONST_IMMORTAL`` does the same as +``LOAD_CONST`` but is more efficient for immortal objects. Removes +``RETURN_CONST`` instruction. +.. +.. date: 2024-10-24-22-43-03 +.. gh-issue: 125942 +.. nonce: 3UQht1 +.. section: Core and Builtins +On Android, the ``errors`` setting of :any:`sys.stdout` was changed from +``surrogateescape`` to ``backslashreplace``. +.. +.. date: 2024-10-23-14-42-27 +.. gh-issue: 125859 +.. nonce: m3EF9E +.. section: Core and Builtins +Fix a crash in the free threading build when :func:`gc.get_objects` or +:func:`gc.get_referrers` is called during an in-progress garbage collection. +.. +.. date: 2024-10-23-14-05-47 +.. gh-issue: 125868 +.. nonce: uLfXYB +.. section: Core and Builtins +It was possible in 3.14.0a1 only for attribute lookup to give the wrong +value. This was due to an incorrect specialization in very specific +circumstances. This is fixed in 3.14.0a2. +.. +.. date: 2024-10-22-04-18-53 +.. gh-issue: 125498 +.. nonce: cFjPIn +.. section: Core and Builtins +The JIT has been updated to leverage Clang 19’s new ``preserve_none`` +attribute, which supports more platforms and is more useful than LLVM's +existing ``ghccc`` calling convention. This also removes the need to +manually patch the calling convention in LLVM IR, simplifying the JIT +compilation process. +.. +.. date: 2024-10-18-16-00-10 +.. gh-issue: 125703 +.. nonce: QRoqMo +.. section: Core and Builtins +Correctly honour :mod:`tracemalloc` hooks in specialized ``Py_DECREF`` +paths. Patch by Pablo Galindo +.. +.. date: 2024-10-18-10-11-43 +.. gh-issue: 125593 +.. nonce: Q97m3A +.. section: Core and Builtins +Use color to highlight error locations in traceback from exception group +.. +.. date: 2024-10-16-23-06-06 +.. gh-issue: 125017 +.. nonce: fcltj0 +.. section: Core and Builtins +Fix crash on certain accesses to the ``__annotations__`` of +:class:`staticmethod` and :class:`classmethod` objects. +.. +.. date: 2024-10-16-13-52-48 +.. gh-issue: 125588 +.. nonce: kCahyO +.. section: Core and Builtins +The Python PEG generator can now use f-strings in the grammar actions. Patch +by Pablo Galindo +.. +.. date: 2024-10-16-12-12-39 +.. gh-issue: 125444 +.. nonce: 9tG2X6 +.. section: Core and Builtins +Fix illegal instruction for older Arm architectures. Patch by Diego Russo, +testing by Ross Burton. +.. +.. date: 2024-10-14-17-13-12 +.. gh-issue: 118423 +.. nonce: SkBoda +.. section: Core and Builtins +Add a new ``INSTRUCTION_SIZE`` macro to the cases generator which returns +the current instruction size. +.. +.. date: 2024-10-09-13-53-50 +.. gh-issue: 125038 +.. nonce: ffSLCz +.. section: Core and Builtins +Fix crash when iterating over a generator expression after direct changes on +``gi_frame.f_locals``. Patch by Mikhail Efimov. +.. +.. date: 2024-10-01-17-31-32 +.. gh-issue: 124855 +.. nonce: sdsv_H +.. section: Core and Builtins +Don't allow the JIT and perf support to be active at the same time. Patch by +Pablo Galindo +.. +.. date: 2024-09-14-20-09-39 +.. gh-issue: 123714 +.. nonce: o1mbe4 +.. section: Core and Builtins +Update JIT compilation to use LLVM 19 +.. +.. date: 2024-09-11-01-32-07 +.. gh-issue: 123930 +.. nonce: BkPfB6 +.. section: Core and Builtins +Improve the error message when a script shadowing a module from the standard +library causes :exc:`ImportError` to be raised during a "from" import. +Similarly, improve the error message when a script shadowing a third party +module attempts to "from" import an attribute from that third party module +while still initialising. +.. +.. date: 2024-06-13-19-12-49 +.. gh-issue: 119793 +.. nonce: FDVCDk +.. section: Core and Builtins +The :func:`map` built-in now has an optional keyword-only *strict* flag like +:func:`zip` to check that all the iterables are of equal length. Patch by +Wannes Boeykens. +.. +.. date: 2024-05-12-03-10-36 +.. gh-issue: 118950 +.. nonce: 5Wc4vp +.. section: Library +Fix bug where SSLProtocol.connection_lost wasn't getting called when OSError +was thrown on writing to socket. +.. +.. date: 2023-12-30-00-21-45 +.. gh-issue: 113570 +.. nonce: _XQgsW +.. section: Library +Fixed a bug in ``reprlib.repr`` where it incorrectly called the repr method +on shadowed Python built-in types. +.. +.. date: 2024-11-07-20-24-58 +.. gh-issue: 126554 +.. nonce: ri12eb +.. section: C API +Fix error handling in :class:`ctypes.CDLL` objects which could result in a +crash in rare situations. +.. +.. date: 2024-10-28-15-56-03 +.. gh-issue: 126061 +.. nonce: Py51_1 +.. section: C API +Add :c:func:`PyLong_IsPositive`, :c:func:`PyLong_IsNegative` and +:c:func:`PyLong_IsZero` for checking if a :c:type:`PyLongObject` is +positive, negative, or zero, respectively. +.. +.. date: 2024-10-16-19-28-23 +.. gh-issue: 125608 +.. nonce: gTsU2g +.. section: C API +Fix a bug where dictionary watchers (e.g., :c:func:`PyDict_Watch`) on an +object's attribute dictionary (:attr:`~object.__dict__`) were not triggered +when the object's attributes were modified. +.. +.. date: 2024-09-03-13-33-33 +.. gh-issue: 123619 +.. nonce: HhgUUI +.. section: C API +Added the :c:func:`PyUnstable_Object_EnableDeferredRefcount` function for +enabling :pep:`703` deferred reference counting. +.. +.. date: 2024-07-30-14-40-08 +.. gh-issue: 121654 +.. nonce: tgGeAl +.. section: C API +Add :c:func:`PyType_Freeze` function to make a type immutable. Patch by +Victor Stinner. +.. +.. date: 2024-06-04-13-38-44 +.. gh-issue: 120026 +.. nonce: uhEvJ9 +.. section: C API +The :c:macro:`!Py_HUGE_VAL` macro is :term:`soft deprecated`. +.. +.. date: 2024-11-13-15-47-09 +.. gh-issue: 126691 +.. nonce: ni4K-b +.. section: Build +Removed the ``--with-emscripten-target`` configure flag. We unified the +``node`` and ``browser`` options and the same build can now be used, +independent of target runtime. +.. +.. date: 2024-11-07-11-09-31 +.. gh-issue: 123877 +.. nonce: CVdd0b +.. section: Build +Use ``wasm32-wasip1`` as the target triple for WASI instead of +``wasm32-wasi``. The latter will eventually be reclaimed for WASI 1.0 while +CPython currently only supports WASI preview1. +.. +.. date: 2024-11-06-11-12-04 +.. gh-issue: 126458 +.. nonce: 7vzHtx +.. section: Build +Disable SIMD support for HACL under WASI. +.. +.. date: 2024-11-04-09-42-04 +.. gh-issue: 89640 +.. nonce: QBv05o +.. section: Build +Hard-code float word ordering as little endian on WASM. +.. +.. date: 2024-10-31-15-37-05 +.. gh-issue: 126206 +.. nonce: oC6z2i +.. section: Build +``make clinic`` now runs Argument Clinic using the ``--force`` option, thus +forcefully regenerating generated code. +.. +.. date: 2024-10-30-17-47-15 +.. gh-issue: 126187 +.. nonce: 0jFCZB +.. section: Build +Introduced ``Tools/wasm/emscripten.py`` to simplify doing Emscripten builds. +.. +.. date: 2024-10-25-17-20-50 +.. gh-issue: 124932 +.. nonce: F-aNuS +.. section: Build +For cross builds, there is now support for having a different install +``prefix`` than the ``host_prefix`` used by ``getpath.py``. This is set to +``/`` by default for Emscripten, on other platforms the default behavior is +the same as before. +.. +.. date: 2024-10-25-00-29-15 +.. gh-issue: 125946 +.. nonce: KPA3g0 +.. section: Build +The minimum supported Android version is now 7.0 (API level 24). +.. +.. date: 2024-10-24-22-14-35 +.. gh-issue: 125940 +.. nonce: 2wMtTA +.. section: Build +The Android build now supports `16 KB page sizes +`__. +.. +.. date: 2024-10-16-09-37-51 +.. gh-issue: 89640 +.. nonce: UDsW-j +.. section: Build +Improve detection of float word ordering on Linux when link-time +optimizations are enabled. +.. +.. date: 2024-10-04-17-29-23 +.. gh-issue: 124928 +.. nonce: FsGffe +.. section: Build +Emscripten builds now require node >= 18. +.. +.. date: 2024-03-03-20-28-23 +.. gh-issue: 115382 +.. nonce: 97hJFE +.. section: Build +Fix cross compile failures when the host and target SOABIs match. + +.. bpo: 33786 +.. date: 2018-06-06-23-24-40 +.. nonce: lBvT8z +.. release date: 2018-06-11 +.. section: Core and Builtins +Fix asynchronous generators to handle GeneratorExit in athrow() correctly +.. +.. bpo: 30654 +.. date: 2018-05-28-12-28-53 +.. nonce: 9fDJye +.. section: Core and Builtins +Fixed reset of the SIGINT handler to SIG_DFL on interpreter shutdown even +when there was a custom handler set previously. Patch by Philipp Kerling. +.. +.. bpo: 33622 +.. date: 2018-05-23-20-46-14 +.. nonce: xPucO9 +.. section: Core and Builtins +Fixed a leak when the garbage collector fails to add an object with the +``__del__`` method or referenced by it into the :data:`gc.garbage` list. +:c:func:`PyGC_Collect` can now be called when an exception is set and +preserves it. +.. +.. bpo: 31849 +.. date: 2018-05-14-11-00-00 +.. nonce: EmHaH4 +.. section: Core and Builtins +Fix signed/unsigned comparison warning in pyhash.c. +.. +.. bpo: 33391 +.. date: 2018-05-02-08-36-03 +.. nonce: z4a7rb +.. section: Core and Builtins +Fix a leak in set_symmetric_difference(). +.. +.. bpo: 28055 +.. date: 2018-04-25-20-44-42 +.. nonce: f49kfC +.. section: Core and Builtins +Fix unaligned accesses in siphash24(). Patch by Rolf Eike Beer. +.. +.. bpo: 33231 +.. date: 2018-04-05-22-20-44 +.. nonce: 3Jmo0q +.. section: Core and Builtins +Fix potential memory leak in ``normalizestring()``. +.. +.. bpo: 29922 +.. date: 2018-04-03-00-30-25 +.. nonce: CdLuMl +.. section: Core and Builtins +Improved error messages in 'async with' when ``__aenter__()`` or +``__aexit__()`` return non-awaitable object. +.. +.. bpo: 33199 +.. date: 2018-04-02-09-32-40 +.. nonce: TPnxQu +.. section: Core and Builtins +Fix ``ma_version_tag`` in dict implementation is uninitialized when copying +from key-sharing dict. +.. +.. bpo: 33041 +.. date: 2018-03-18-13-56-14 +.. nonce: XwPhI2 +.. section: Core and Builtins +Fixed jumping when the function contains an ``async for`` loop. +.. +.. bpo: 32282 +.. date: 2017-12-12-14-02-28 +.. nonce: xFVMTn +.. section: Core and Builtins +Fix an unnecessary ifdef in the include of VersionHelpers.h in socketmodule +on Windows. +.. +.. bpo: 21983 +.. date: 2017-10-02-21-02-14 +.. nonce: UoC319 +.. section: Core and Builtins +Fix a crash in ``ctypes.cast()`` in case the type argument is a ctypes +structured data type. Patch by Eryk Sun and Oren Milman. +.. +.. bpo: 30167 +.. date: 2018-06-10-19-29-17 +.. nonce: G5EgC5 +.. section: Library +Prevent site.main() exception if PYTHONSTARTUP is set. Patch by Steve Weber. +.. +.. bpo: 33812 +.. date: 2018-06-10-13-26-02 +.. nonce: frGAOr +.. section: Library +Datetime instance d with non-None tzinfo, but with d.tzinfo.utcoffset(d) +returning None is now treated as naive by the astimezone() method. +.. +.. bpo: 30805 +.. date: 2018-06-08-17-34-16 +.. nonce: 3qCWa0 +.. section: Library +Avoid race condition with debug logging +.. +.. bpo: 33767 +.. date: 2018-06-03-22-41-59 +.. nonce: 2e82g3 +.. section: Library +The concatenation (``+``) and repetition (``*``) sequence operations now +raise :exc:`TypeError` instead of :exc:`SystemError` when performed on +:class:`mmap.mmap` objects. Patch by Zackery Spytz. +.. +.. bpo: 32684 +.. date: 2018-05-29-12-51-18 +.. nonce: ZEIism +.. section: Library +Fix gather to propagate cancellation of itself even with return_exceptions. +.. +.. bpo: 33674 +.. date: 2018-05-28-22-49-59 +.. nonce: 6LFFj7 +.. section: Library +Fix a race condition in SSLProtocol.connection_made() of asyncio.sslproto: +start immediately the handshake instead of using call_soon(). Previously, +data_received() could be called before the handshake started, causing the +handshake to hang or fail. +.. +.. bpo: 31647 +.. date: 2018-05-28-18-40-26 +.. nonce: s4Fad3 +.. section: Library +Fixed bug where calling write_eof() on a _SelectorSocketTransport after it's +already closed raises AttributeError. +.. +.. bpo: 33672 +.. date: 2018-05-28-17-45-06 +.. nonce: GM_Xm_ +.. section: Library +Fix Task.__repr__ crash with Cython's bogus coroutines +.. +.. bpo: 33469 +.. date: 2018-05-28-15-55-12 +.. nonce: hmXBpY +.. section: Library +Fix RuntimeError after closing loop that used run_in_executor +.. +.. bpo: 11874 +.. date: 2018-05-23-00-26-27 +.. nonce: glK5iP +.. section: Library +Use a better regex when breaking usage into wrappable parts. Avoids bogus +assertion errors from custom metavar strings. +.. +.. bpo: 30877 +.. date: 2018-05-22-13-05-12 +.. nonce: JZEGjI +.. section: Library +Fixed a bug in the Python implementation of the JSON decoder that prevented +the cache of parsed strings from clearing after finishing the decoding. +Based on patch by c-fos. +.. +.. bpo: 33548 +.. date: 2018-05-16-17-05-48 +.. nonce: xWslmx +.. section: Library +tempfile._candidate_tempdir_list should consider common TEMP locations +.. +.. bpo: 33542 +.. date: 2018-05-16-09-30-27 +.. nonce: idNAcs +.. section: Library +Prevent ``uuid.get_node`` from using a DUID instead of a MAC on Windows. +Patch by Zvi Effron +.. +.. bpo: 26819 +.. date: 2018-05-16-05-24-43 +.. nonce: taxbVT +.. section: Library +Fix race condition with ``ReadTransport.resume_reading`` in Windows proactor +event loop. +.. +.. bpo: 28556 +.. date: 2018-05-10-14-51-19 +.. nonce: y3zK6I +.. section: Library +Minor fixes in typing module: add annotations to ``NamedTuple.__new__``, +pass ``*args`` and ``**kwds`` in ``Generic.__new__``. Original PRs by +Paulius Šarka and Chad Dombrova. +.. +.. bpo: 20087 +.. date: 2018-05-05-18-02-24 +.. nonce: lJrvXL +.. section: Library +Updated alias mapping with glibc 2.27 supported locales. +.. +.. bpo: 33422 +.. date: 2018-05-05-09-53-05 +.. nonce: 4FtQ0q +.. section: Library +Fix trailing quotation marks getting deleted when looking up byte/string +literals on pydoc. Patch by Andrés Delfino. +.. +.. bpo: 33197 +.. date: 2018-04-29-23-56-20 +.. nonce: dgRLqr +.. section: Library +Update error message when constructing invalid inspect.Parameters Patch by +Donghee Na. +.. +.. bpo: 33383 +.. date: 2018-04-29-11-15-38 +.. nonce: g32YWn +.. section: Library +Fixed crash in the get() method of the :mod:`dbm.ndbm` database object when +it is called with a single argument. +.. +.. bpo: 33329 +.. date: 2018-04-23-13-21-39 +.. nonce: lQ-Eod +.. section: Library +Fix multiprocessing regression on newer glibcs +.. +.. bpo: 991266 +.. date: 2018-04-21-00-24-08 +.. nonce: h93TP_ +.. section: Library +Fix quoting of the ``Comment`` attribute of +:class:`http.cookies.SimpleCookie`. +.. +.. bpo: 33131 +.. date: 2018-04-20-10-43-17 +.. nonce: L2E977 +.. section: Library +Upgrade bundled version of pip to 10.0.1. +.. +.. bpo: 33308 +.. date: 2018-04-18-19-12-25 +.. nonce: fW75xi +.. section: Library +Fixed a crash in the :mod:`parser` module when converting an ST object to a +tree of tuples or lists with ``line_info=False`` and ``col_info=True``. +.. +.. bpo: 33263 +.. date: 2018-04-11-20-29-19 +.. nonce: B56Hc1 +.. section: Library +Fix FD leak in ``_SelectorSocketTransport`` Patch by Vlad Starostin. +.. +.. bpo: 33256 +.. date: 2018-04-10-20-57-14 +.. nonce: ndHkqu +.. section: Library +Fix display of ```` call in the html produced by ``cgitb.html()``. +Patch by Stéphane Blondon. +.. +.. bpo: 33203 +.. date: 2018-04-05-11-09-45 +.. nonce: Hje9Py +.. section: Library +``random.Random.choice()`` now raises ``IndexError`` for empty sequences +consistently even when called from subclasses without a ``getrandbits()`` +implementation. +.. +.. bpo: 33224 +.. date: 2018-04-04-23-41-30 +.. nonce: pyR0jB +.. section: Library +Update difflib.mdiff() for :pep:`479`. Convert an uncaught StopIteration in a +generator into a return-statement. +.. +.. bpo: 33209 +.. date: 2018-04-03-10-37-13 +.. nonce: 9sGWE_ +.. section: Library +End framing at the end of C implementation of :func:`pickle.Pickler.dump`. +.. +.. bpo: 32861 +.. date: 2018-04-02-20-44-54 +.. nonce: HeBjzN +.. section: Library +The urllib.robotparser's ``__str__`` representation now includes wildcard +entries and the "Crawl-delay" and "Request-rate" fields. Patch by Michael +Lazar. +.. +.. bpo: 33096 +.. date: 2018-03-25-13-18-16 +.. nonce: ofdbe7 +.. section: Library +Allow ttk.Treeview.insert to insert iid that has a false boolean value. Note +iid=0 and iid=False would be same. Patch by Garvit Khatri. +.. +.. bpo: 33127 +.. date: 2018-03-24-15-08-24 +.. nonce: olJmHv +.. section: Library +The ssl module now compiles with LibreSSL 2.7.1. +.. +.. bpo: 33021 +.. date: 2018-03-12-00-27-56 +.. nonce: m19B9T +.. section: Library +Release the GIL during fstat() calls, avoiding hang of all threads when +calling mmap.mmap(), os.urandom(), and random.seed(). Patch by Nir Soffer. +.. +.. bpo: 27683 +.. date: 2018-03-07-22-28-17 +.. nonce: 572Rv4 +.. section: Library +Fix a regression in :mod:`ipaddress` that result of :meth:`hosts` is empty +when the network is constructed by a tuple containing an integer mask and +only 1 bit left for addresses. +.. +.. bpo: 32844 +.. date: 2018-02-28-13-08-00 +.. nonce: u8tnAe +.. section: Library +Fix wrong redirection of a low descriptor (0 or 1) to stderr in subprocess +if another low descriptor is closed. +.. +.. bpo: 31908 +.. date: 2017-10-31 +.. nonce: g4xh8x +.. section: Library +Fix output of cover files for ``trace`` module command-line tool. Previously +emitted cover files only when ``--missing`` option was used. Patch by +Michael Selik. +.. +.. bpo: 31457 +.. date: 2017-10-18-19-05-17 +.. nonce: KlE6r8 +.. section: Library +If nested log adapters are used, the inner ``process()`` methods are no +longer omitted. +.. +.. bpo: 16865 +.. date: 2017-09-29-16-40-38 +.. nonce: l-f6I_ +.. section: Library +Support arrays >=2GiB in :mod:`ctypes`. Patch by Segev Finer. +.. +.. bpo: 31238 +.. date: 2017-08-21-12-31-53 +.. nonce: Gg0LRH +.. section: Library +pydoc: the stop() method of the private ServerThread class now waits until +DocServer.serve_until_quit() completes and then explicitly sets its +docserver attribute to None to break a reference cycle. +.. +.. bpo: 33503 +.. date: 2018-05-14-20-08-58 +.. nonce: Wvt0qg +.. section: Documentation +Fix broken pypi link +.. +.. bpo: 33421 +.. date: 2018-05-14-15-23-51 +.. nonce: 3GU_QO +.. section: Documentation +Add missing documentation for ``typing.AsyncContextManager``. +.. +.. bpo: 33378 +.. date: 2018-04-29-04-02-18 +.. nonce: -anAHN +.. section: Documentation +Add Korean language switcher for https://docs.python.org/3/ +.. +.. bpo: 33276 +.. date: 2018-04-20-14-09-36 +.. nonce: rA1z_3 +.. section: Documentation +Clarify that the ``__path__`` attribute on modules cannot be just any value. +.. +.. bpo: 33201 +.. date: 2018-04-01-21-03-41 +.. nonce: aa8Lkl +.. section: Documentation +Modernize documentation for writing C extension types. +.. +.. bpo: 33195 +.. date: 2018-04-01-14-30-36 +.. nonce: dRS-XX +.. section: Documentation +Deprecate ``Py_UNICODE`` usage in ``c-api/arg`` document. ``Py_UNICODE`` +related APIs are deprecated since Python 3.3, but it is missed in the +document. +.. +.. bpo: 33126 +.. date: 2018-03-28-17-03-17 +.. nonce: 5UGkNv +.. section: Documentation +Document PyBuffer_ToContiguous(). +.. +.. bpo: 27212 +.. date: 2018-03-22-19-23-04 +.. nonce: wrE5KR +.. section: Documentation +Modify documentation for the :func:`islice` recipe to consume initial values +up to the start index. +.. +.. bpo: 28247 +.. date: 2018-03-20-20-11-05 +.. nonce: -V-WS- +.. section: Documentation +Update :mod:`zipapp` documentation to describe how to make standalone +applications. +.. +.. bpo: 18802 +.. date: 2018-03-11-18-53-47 +.. nonce: JhAqH3 +.. section: Documentation +Documentation changes for ipaddress. Patch by Jon Foster and Berker Peksag. +.. +.. bpo: 27428 +.. date: 2018-03-11-00-16-56 +.. nonce: B7A8FT +.. section: Documentation +Update documentation to clarify that ``WindowsRegistryFinder`` implements +``MetaPathFinder``. (Patch by Himanshu Lakhara) +.. +.. bpo: 8243 +.. date: 2018-01-13-20-30-53 +.. nonce: s98r28 +.. section: Documentation +Add a note about curses.addch and curses.addstr exception behavior when +writing outside a window, or pad. +.. +.. bpo: 31432 +.. date: 2017-09-13-07-14-59 +.. nonce: yAY4Z3 +.. section: Documentation +Clarify meaning of CERT_NONE, CERT_OPTIONAL, and CERT_REQUIRED flags for +ssl.SSLContext.verify_mode. +.. +.. bpo: 33655 +.. date: 2018-05-26-16-01-40 +.. nonce: Frb4LA +.. section: Tests +Ignore test_posix_fallocate failures on BSD platforms that might be due to +running on ZFS. +.. +.. bpo: 19417 +.. date: 2018-01-08-13-33-47 +.. nonce: 2asoXy +.. section: Tests +Add test_bdb.py. +.. +.. bpo: 5755 +.. date: 2018-06-04-21-34-34 +.. nonce: 65GmCj +.. section: Build +Move ``-Wstrict-prototypes`` option to ``CFLAGS_NODIST`` from ``OPT``. This +option emitted annoying warnings when building extension modules written in +C++. +.. +.. bpo: 33614 +.. date: 2018-05-28-11-40-22 +.. nonce: 28e0sE +.. section: Build +Ensures module definition files for the stable ABI on Windows are correctly +regenerated. +.. +.. bpo: 33522 +.. date: 2018-05-15-12-44-50 +.. nonce: mJoNcA +.. section: Build +Enable CI builds on Visual Studio Team Services at +https://python.visualstudio.com/cpython +.. +.. bpo: 33012 +.. date: 2018-05-10-21-10-01 +.. nonce: 5Zfjac +.. section: Build +Add ``-Wno-cast-function-type`` for gcc 8 for silencing warnings about +function casts like casting to PyCFunction in method definition lists. +.. +.. bpo: 33394 +.. date: 2018-04-30-17-36-46 +.. nonce: _Vdi4t +.. section: Build +Enable the verbose build for extension modules, when GNU make is passed +macros on the command line. +.. +.. bpo: 33184 +.. date: 2018-04-13-11-39-28 +.. nonce: aEohx0 +.. section: Windows +Update Windows installer to OpenSSL 1.0.2o. +.. +.. bpo: 33184 +.. date: 2018-04-07-00-58-50 +.. nonce: rMTiqu +.. section: macOS +Update macOS installer build to use OpenSSL 1.0.2o. +.. +.. bpo: 33656 +.. date: 2018-06-10-17-59-36 +.. nonce: 60ZqJS +.. section: IDLE +On Windows, add API call saying that tk scales for DPI. On Windows 8.1+ or +10, with DPI compatibility properties of the Python binary unchanged, and a +monitor resolution greater than 96 DPI, this should make text and lines +sharper. It should otherwise have no effect. +.. +.. bpo: 33768 +.. date: 2018-06-04-19-23-11 +.. nonce: I_2qpV +.. section: IDLE +Clicking on a context line moves that line to the top of the editor window. +.. +.. bpo: 33763 +.. date: 2018-06-03-20-12-57 +.. nonce: URiFlE +.. section: IDLE +IDLE: Use read-only text widget for code context instead of label widget. +.. +.. bpo: 33664 +.. date: 2018-06-03-09-13-28 +.. nonce: PZzQyL +.. section: IDLE +Scroll IDLE editor text by lines. Previously, the mouse wheel and scrollbar +slider moved text by a fixed number of pixels, resulting in partial lines at +the top of the editor box. The change also applies to the shell and grep +output windows, but not to read-only text views. +.. +.. bpo: 33679 +.. date: 2018-05-29-07-14-37 +.. nonce: MgX_Ui +.. section: IDLE +Enable theme-specific color configuration for Code Context. Use the +Highlights tab to see the setting for built-in themes or add settings to +custom themes. +.. +.. bpo: 33642 +.. date: 2018-05-24-20-42-44 +.. nonce: J0VQbS +.. section: IDLE +Display up to maxlines non-blank lines for Code Context. If there is no +current context, show a single blank line. +.. +.. bpo: 33628 +.. date: 2018-05-23-19-51-07 +.. nonce: sLlFLO +.. section: IDLE +IDLE: Cleanup codecontext.py and its test. +.. +.. bpo: 33564 +.. date: 2018-05-17-19-41-12 +.. nonce: XzHZJe +.. section: IDLE +IDLE's code context now recognizes async as a block opener. +.. +.. bpo: 29706 +.. date: 2018-05-15-17-01-10 +.. nonce: id4H5i +.. section: IDLE +IDLE now colors async and await as keywords in 3.6. They become full +keywords in 3.7. +.. +.. bpo: 21474 +.. date: 2018-04-29-16-13-02 +.. nonce: bglg-F +.. section: IDLE +Update word/identifier definition from ascii to unicode. In text and entry +boxes, this affects selection by double-click, movement left/right by +control-left/right, and deletion left/right by control-BACKSPACE/DEL. +.. +.. bpo: 33204 +.. date: 2018-04-02-00-28-13 +.. nonce: NBsuIv +.. section: IDLE +IDLE: consistently color invalid string prefixes. A 'u' string prefix cannot +be paired with either 'r' or 'f'. Consistently color as much of the prefix, +starting at the right, as is valid. Revise and extend colorizer test. +.. +.. bpo: 32831 +.. date: 2018-02-12-08-08-45 +.. nonce: srDRvU +.. section: IDLE +Add docstrings and tests for codecontext. +.. +.. bpo: 33189 +.. date: 2018-04-03-18-10-00 +.. nonce: QrXR00 +.. section: Tools/Demos +:program:`pygettext.py` now recognizes only literal strings as docstrings +and translatable strings, and rejects bytes literals and f-string +expressions. +.. +.. bpo: 31920 +.. date: 2018-03-26-18-54-24 +.. nonce: u_WKsT +.. section: Tools/Demos +Fixed handling directories as arguments in the ``pygettext`` script. Based +on patch by Oleg Krasnikov. +.. +.. bpo: 29673 +.. date: 2018-03-16-17-25-05 +.. nonce: m8QtaW +.. section: Tools/Demos +Fix pystackv and pystack gdbinit macros. +.. +.. bpo: 32885 +.. date: 2018-02-20-12-16-47 +.. nonce: dL5x7C +.. section: Tools/Demos +Add an ``-n`` flag for ``Tools/scripts/pathfix.py`` to disable automatic +backup creation (files with ``~`` suffix). +.. +.. bpo: 31583 +.. date: 2017-09-26-10-11-21 +.. nonce: TM90_H +.. section: Tools/Demos +Fix 2to3 for using with --add-suffix option but without --output-dir option +for relative path to files in current directory. +.. +.. bpo: 32374 +.. date: 2018-01-09-17-03-54 +.. nonce: SwwLoz +.. section: C API +Document that m_traverse for multi-phase initialized modules can be called +with m_state=NULL, and add a sanity check + +.. bpo: 24467 +.. date: 9236 +.. nonce: BAJ80- +.. release date: 2015-07-05 +.. section: Core and Builtins +Fixed possible buffer over-read in bytearray. The bytearray object now +always allocates place for trailing null byte and it's buffer now is always +null-terminated. +.. +.. bpo: 0 +.. date: 9235 +.. nonce: 944IUY +.. section: Core and Builtins +Upgrade to Unicode 8.0.0. +.. +.. bpo: 24345 +.. date: 9234 +.. nonce: fVcTaB +.. section: Core and Builtins +Add Py_tp_finalize slot for the stable ABI. +.. +.. bpo: 24400 +.. date: 9233 +.. nonce: 2mNeD8 +.. section: Core and Builtins +Introduce a distinct type for :pep:`492` coroutines; add types.CoroutineType, +inspect.getcoroutinestate, inspect.getcoroutinelocals; coroutines no longer +use CO_GENERATOR flag; sys.set_coroutine_wrapper works only for 'async def' +coroutines; inspect.iscoroutine no longer uses collections.abc.Coroutine, +it's intended to test for pure 'async def' coroutines only; add new opcode: +GET_YIELD_FROM_ITER; fix generators wrapper used in types.coroutine to be +instance of collections.abc.Generator; collections.abc.Awaitable and +collections.abc.Coroutine can no longer be used to detect generator-based +coroutines--use inspect.isawaitable instead. +.. +.. bpo: 24450 +.. date: 9232 +.. nonce: lF0S5c +.. section: Core and Builtins +Add gi_yieldfrom to generators and cr_await to coroutines. Contributed by +Benno Leslie and Yury Selivanov. +.. +.. bpo: 19235 +.. date: 9231 +.. nonce: 0kW4n5 +.. section: Core and Builtins +Add new RecursionError exception. Patch by Georg Brandl. +.. +.. bpo: 21750 +.. date: 9230 +.. nonce: _Ycvgi +.. section: Library +mock_open.read_data can now be read from each instance, as it could in +Python 3.3. +.. +.. bpo: 24552 +.. date: 9229 +.. nonce: VTO6sf +.. section: Library +Fix use after free in an error case of the _pickle module. +.. +.. bpo: 24514 +.. date: 9228 +.. nonce: _xRb2r +.. section: Library +tarfile now tolerates number fields consisting of only whitespace. +.. +.. bpo: 19176 +.. date: 9227 +.. nonce: 8V6nOK +.. section: Library +Fixed doctype() related bugs in C implementation of ElementTree. A +deprecation warning no longer issued by XMLParser subclass with default +doctype() method. Direct call of doctype() now issues a warning. Parser's +doctype() now is not called if target's doctype() is called. Based on patch +by Martin Panter. +.. +.. bpo: 20387 +.. date: 9226 +.. nonce: aAbWbQ +.. section: Library +Restore semantic round-trip correctness in tokenize/untokenize for +tab-indented blocks. +.. +.. bpo: 24456 +.. date: 9225 +.. nonce: yYSd2u +.. section: Library +Fixed possible buffer over-read in adpcm2lin() and lin2adpcm() functions of +the audioop module. +.. +.. bpo: 24336 +.. date: 9224 +.. nonce: 4a5y1m +.. section: Library +The contextmanager decorator now works with functions with keyword arguments +called "func" and "self". Patch by Martin Panter. +.. +.. bpo: 24522 +.. date: 9223 +.. nonce: PkcqCA +.. section: Library +Fix possible integer overflow in json accelerator module. +.. +.. bpo: 24489 +.. date: 9222 +.. nonce: GJnMcW +.. section: Library +ensure a previously set C errno doesn't disturb cmath.polar(). +.. +.. bpo: 24408 +.. date: 9221 +.. nonce: vPb5UK +.. section: Library +Fixed AttributeError in measure() and metrics() methods of tkinter.Font. +.. +.. bpo: 14373 +.. date: 9220 +.. nonce: CTYZ4J +.. section: Library +C implementation of functools.lru_cache() now can be used with methods. +.. +.. bpo: 24347 +.. date: 9219 +.. nonce: CPPDb8 +.. section: Library +Set KeyError if PyDict_GetItemWithError returns NULL. +.. +.. bpo: 24348 +.. date: 9218 +.. nonce: U11rhr +.. section: Library +Drop superfluous incref/decref. +.. +.. bpo: 24359 +.. date: 9217 +.. nonce: -IRNG9 +.. section: Library +Check for changed OrderedDict size during iteration. +.. +.. bpo: 24368 +.. date: 9216 +.. nonce: 550kDT +.. section: Library +Support keyword arguments in OrderedDict methods. +.. +.. bpo: 24362 +.. date: 9215 +.. nonce: cHYce5 +.. section: Library +Simplify the C OrderedDict fast nodes resize logic. +.. +.. bpo: 24377 +.. date: 9214 +.. nonce: Gp1Bqr +.. section: Library +Fix a ref leak in OrderedDict.__repr__. +.. +.. bpo: 24369 +.. date: 9213 +.. nonce: qFl7lZ +.. section: Library +Defend against key-changes during iteration. +.. +.. bpo: 24373 +.. date: 9212 +.. nonce: 6TL2XG +.. section: Tests +_testmultiphase and xxlimited now use tp_traverse and tp_finalize to avoid +reference leaks encountered when combining tp_dealloc with PyType_FromSpec +(see issue #16690 for details) +.. +.. bpo: 24458 +.. date: 9211 +.. nonce: 1egApX +.. section: Documentation +Update documentation to cover multi-phase initialization for extension +modules (PEP 489). Patch by Petr Viktorin. +.. +.. bpo: 24351 +.. date: 9210 +.. nonce: XeSVl5 +.. section: Documentation +Clarify what is meant by "identifier" in the context of string.Template +instances. +.. +.. bpo: 24432 +.. date: 9209 +.. nonce: IvUSiN +.. section: Build +Update Windows builds and OS X 10.5 installer to use OpenSSL 1.0.2c. + +.. bpo: 24305 +.. date: 9302 +.. nonce: QeF4A8 +.. release date: 2015-09-07 +.. section: Core and Builtins +Prevent import subsystem stack frames from being counted by the +warnings.warn(stacklevel=) parameter. +.. +.. bpo: 24912 +.. date: 9301 +.. nonce: ubSi5J +.. section: Core and Builtins +Prevent __class__ assignment to immutable built-in objects. +.. +.. bpo: 24975 +.. date: 9300 +.. nonce: 2gLdfN +.. section: Core and Builtins +Fix AST compilation for :pep:`448` syntax. +.. +.. bpo: 24917 +.. date: 9299 +.. nonce: xaQocz +.. section: Library +time_strftime() buffer over-read. +.. +.. bpo: 24748 +.. date: 9298 +.. nonce: 83NuO8 +.. section: Library +To resolve a compatibility problem found with py2exe and pywin32, +imp.load_dynamic() once again ignores previously loaded modules to support +Python modules replacing themselves with extension modules. Patch by Petr +Viktorin. +.. +.. bpo: 24635 +.. date: 9297 +.. nonce: EiJPPf +.. section: Library +Fixed a bug in typing.py where isinstance([], typing.Iterable) would return +True once, then False on subsequent calls. +.. +.. bpo: 24989 +.. date: 9296 +.. nonce: 9BJLiy +.. section: Library +Fixed buffer overread in BytesIO.readline() if a position is set beyond +size. Based on patch by John Leitch. +.. +.. bpo: 24913 +.. date: 9295 +.. nonce: p2ZAJ4 +.. section: Library +Fix overrun error in deque.index(). Found by John Leitch and Bryce Darling. + +.. bpo: 32176 +.. date: 2017-12-02-21-37-22 +.. nonce: Wt25-N +.. release date: 2017-12-05 +.. section: Core and Builtins +co_flags.CO_NOFREE is now always set correctly by the code object +constructor based on freevars and cellvars, rather than needing to be set +correctly by the caller. This ensures it will be cleared automatically when +additional cell references are injected into a modified code object and +function. +.. +.. bpo: 31949 +.. date: 2017-11-05-16-11-07 +.. nonce: 2yNC_z +.. section: Core and Builtins +Fixed several issues in printing tracebacks (PyTraceBack_Print()). +Setting sys.tracebacklimit to 0 or less now suppresses printing tracebacks. +Setting sys.tracebacklimit to None now causes using the default limit. +Setting sys.tracebacklimit to an integer larger than LONG_MAX now means using +the limit LONG_MAX rather than the default limit. +Fixed integer overflows in the case of more than ``2**31`` traceback items on +Windows. +Fixed output errors handling. +.. +.. bpo: 30696 +.. date: 2017-10-28-22-06-03 +.. nonce: lhC3HE +.. section: Core and Builtins +Fix the interactive interpreter looping endlessly when no memory. +.. +.. bpo: 20047 +.. date: 2017-10-28-19-11-05 +.. nonce: GuNAto +.. section: Core and Builtins +Bytearray methods partition() and rpartition() now accept only bytes-like +objects as separator, as documented. In particular they now raise TypeError +rather of returning a bogus result when an integer is passed as a separator. +.. +.. bpo: 31852 +.. date: 2017-10-27-19-18-44 +.. nonce: P_4cVr +.. section: Core and Builtins +Fix a segmentation fault caused by a combination of the async soft keyword +and continuation lines. +.. +.. bpo: 21720 +.. date: 2017-10-25-15-51-37 +.. nonce: BwIKLP +.. section: Core and Builtins +BytesWarning no longer emitted when the *fromlist* argument of +``__import__()`` or the ``__all__`` attribute of the module contain bytes +instances. +.. +.. bpo: 31825 +.. date: 2017-10-20-14-07-46 +.. nonce: gJvmGW +.. section: Core and Builtins +Fixed OverflowError in the 'unicode-escape' codec and in +codecs.escape_decode() when decode an escaped non-ascii byte. +.. +.. bpo: 28603 +.. date: 2017-10-17-13-29-19 +.. nonce: _-oia3 +.. section: Core and Builtins +Print the full context/cause chain of exceptions on interpreter exit, even +if an exception in the chain is unhashable or compares equal to later ones. +Patch by Zane Bitter. +.. +.. bpo: 31786 +.. date: 2017-10-15-23-44-57 +.. nonce: XwdEP4 +.. section: Core and Builtins +Fix timeout rounding in the select module to round correctly negative +timeouts between -1.0 and 0.0. The functions now block waiting for events as +expected. Previously, the call was incorrectly non-blocking. Patch by Pablo +Galindo. +.. +.. bpo: 31642 +.. date: 2017-10-08-10-00-55 +.. nonce: 1IKqgs +.. section: Core and Builtins +Restored blocking "from package import module" by setting +sys.modules["package.module"] to None. +.. +.. bpo: 31626 +.. date: 2017-10-01-15-48-03 +.. nonce: reLPxY +.. section: Core and Builtins +Fixed a bug in debug memory allocator. There was a write to freed memory +after shrinking a memory block. +.. +.. bpo: 31619 +.. date: 2017-09-29-20-32-24 +.. nonce: 6gQ1kv +.. section: Core and Builtins +Fixed a ValueError when convert a string with large number of underscores to +integer with binary base. +.. +.. bpo: 31592 +.. date: 2017-09-26-16-05-04 +.. nonce: IFBZj9 +.. section: Core and Builtins +Fixed an assertion failure in Python parser in case of a bad +``unicodedata.normalize()``. Patch by Oren Milman. +.. +.. bpo: 31588 +.. date: 2017-09-26-13-03-16 +.. nonce: wT9Iy7 +.. section: Core and Builtins +Raise a ``TypeError`` with a helpful error message when class creation fails +due to a metaclass with a bad ``__prepare__()`` method. Patch by Oren +Milman. +.. +.. bpo: 31566 +.. date: 2017-09-24-09-57-04 +.. nonce: OxwINs +.. section: Core and Builtins +Fix an assertion failure in ``_warnings.warn()`` in case of a bad ``__name__`` +global. Patch by Oren Milman. +.. +.. bpo: 31505 +.. date: 2017-09-18-12-07-39 +.. nonce: VomaFa +.. section: Core and Builtins +Fix an assertion failure in ``json``, in case ``_json.make_encoder()`` received +a bad ``encoder()`` argument. Patch by Oren Milman. +.. +.. bpo: 31492 +.. date: 2017-09-16-22-49-16 +.. nonce: RtyteL +.. section: Core and Builtins +Fix assertion failures in case of failing to import from a module with a bad +``__name__`` attribute, and in case of failing to access an attribute of +such a module. Patch by Oren Milman. +.. +.. bpo: 31490 +.. date: 2017-09-16-13-32-35 +.. nonce: r7m2sj +.. section: Core and Builtins +Fix an assertion failure in ``ctypes`` class definition, in case the class has +an attribute whose name is specified in ``_anonymous_`` but not in +``_fields_``. Patch by Oren Milman. +.. +.. bpo: 31478 +.. date: 2017-09-15-09-13-07 +.. nonce: o06iKD +.. section: Core and Builtins +Fix an assertion failure in ``_random.Random.seed()`` in case the argument has +a bad ``__abs__()`` method. Patch by Oren Milman. +.. +.. bpo: 31315 +.. date: 2017-09-01-00-40-58 +.. nonce: ZX20bl +.. section: Core and Builtins +Fix an assertion failure in imp.create_dynamic(), when spec.name is not a +string. Patch by Oren Milman. +.. +.. bpo: 31311 +.. date: 2017-08-31-17-52-56 +.. nonce: bNE2l- +.. section: Core and Builtins +Fix a crash in the ``__setstate__()`` method of ``ctypes._CData``, in case of +a bad ``__dict__``. Patch by Oren Milman. +.. +.. bpo: 31293 +.. date: 2017-08-28-17-51-42 +.. nonce: eMYZXj +.. section: Core and Builtins +Fix crashes in true division and multiplication of a timedelta object by a +float with a bad as_integer_ratio() method. Patch by Oren Milman. +.. +.. bpo: 31285 +.. date: 2017-08-27-21-18-30 +.. nonce: 7lzaKV +.. section: Core and Builtins +Fix an assertion failure in ``warnings.warn_explicit``, when the return value +of the received loader's ``get_source()`` has a bad ``splitlines()`` method. Patch +by Oren Milman. +.. +.. bpo: 30817 +.. date: 2017-07-01-15-11-13 +.. nonce: j7ZvN_ +.. section: Core and Builtins +``PyErr_PrintEx()`` clears now the ignored exception that may be raised by +``_PySys_SetObjectId()``, for example when no memory. +.. +.. bpo: 28556 +.. date: 2017-12-05-02-03-07 +.. nonce: 9Z_PsJ +.. section: Library +Two minor fixes for ``typing`` module: allow shallow copying instances of +generic classes, improve interaction of ``__init_subclass__`` with generics. +Original PRs by Ivan Levkivskyi. +.. +.. bpo: 27240 +.. date: 2017-12-02-16-06-00 +.. nonce: Kji34M +.. section: Library +The header folding algorithm for the new email policies has been rewritten, +which also fixes bpo-30788, bpo-31831, and bpo-32182. In particular, +RFC2231 folding is now done correctly. +.. +.. bpo: 32186 +.. date: 2017-11-30-20-38-16 +.. nonce: O42bVe +.. section: Library +io.FileIO.readall() and io.FileIO.read() now release the GIL when getting +the file size. Fixed hang of all threads with inaccessible NFS server. Patch +by Nir Soffer. +.. +.. bpo: 12239 +.. date: 2017-11-24-14-07-55 +.. nonce: Nj3A0x +.. section: Library +Make :meth:`!msilib.SummaryInformation.GetProperty` return ``None`` when the +value of property is ``VT_EMPTY``. Initial patch by Mark Mc Mahon. +.. +.. bpo: 31325 +.. date: 2017-11-23-22-12-11 +.. nonce: 8jAUxN +.. section: Library +Fix wrong usage of :func:`collections.namedtuple` in the +:meth:`RobotFileParser.parse() ` +method. +Initial patch by Robin Wellner. +.. +.. bpo: 12382 +.. date: 2017-11-23-21-47-36 +.. nonce: xWT9k0 +.. section: Library +:func:`!msilib.OpenDatabase` now raises a better exception message when it +couldn't open or create an MSI file. Initial patch by William Tisäter. +.. +.. bpo: 32110 +.. date: 2017-11-22-09-44-15 +.. nonce: VJa9bo +.. section: Library +``codecs.StreamReader.read(n)`` now returns not more than *n* +characters/bytes for non-negative *n*. This makes it compatible with +``read()`` methods of other file-like objects. +.. +.. bpo: 32072 +.. date: 2017-11-18-21-13-52 +.. nonce: nwDV8L +.. section: Library +Fixed issues with binary plists: +Fixed saving bytearrays. +Identical objects will be saved only once. +Equal references will be load as identical objects. +Added support for saving and loading recursive data structures. +.. +.. bpo: 32034 +.. date: 2017-11-15-13-44-28 +.. nonce: uHAOmu +.. section: Library +Make asyncio.IncompleteReadError and LimitOverrunError pickleable. +.. +.. bpo: 32015 +.. date: 2017-11-13-17-48-33 +.. nonce: 4nqRTD +.. section: Library +Fixed the looping of asyncio in the case of reconnection the socket during +waiting async read/write from/to the socket. +.. +.. bpo: 32011 +.. date: 2017-11-12-20-47-59 +.. nonce: NzVDdZ +.. section: Library +Restored support of loading marshal files with the TYPE_INT64 code. These +files can be produced in Python 2.7. +.. +.. bpo: 31970 +.. date: 2017-11-07-14-20-09 +.. nonce: x4EN_9 +.. section: Library +Reduce performance overhead of asyncio debug mode. +.. +.. bpo: 9678 +.. date: 2017-11-03-22-05-47 +.. nonce: oD51q6 +.. section: Library +Fixed determining the MAC address in the uuid module: +Using ifconfig on NetBSD and OpenBSD. +Using arp on Linux, FreeBSD, NetBSD and OpenBSD. +Based on patch by Takayuki Shimizukawa. +.. +.. bpo: 30057 +.. date: 2017-11-03-19-11-43 +.. nonce: NCaijI +.. section: Library +Fix potential missed signal in signal.signal(). +.. +.. bpo: 31933 +.. date: 2017-11-03-08-36-03 +.. nonce: UrtoMP +.. section: Library +Fix Blake2 params leaf_size and node_offset on big endian platforms. Patch +by Jack O'Connor. +.. +.. bpo: 31927 +.. date: 2017-11-02-18-26-40 +.. nonce: 40K6kp +.. section: Library +Fixed compilation of the socket module on NetBSD 8. Fixed assertion failure +or reading arbitrary data when parse a AF_BLUETOOTH address on NetBSD and +DragonFly BSD. +.. +.. bpo: 27666 +.. date: 2017-11-01-18-13-42 +.. nonce: j2zRnF +.. section: Library +Fixed stack corruption in curses.box() and curses.ungetmouse() when the size +of types chtype or mmask_t is less than the size of C long. curses.box() +now accepts characters as arguments. Based on patch by Steve Fink. +.. +.. bpo: 31897 +.. date: 2017-10-30-11-04-56 +.. nonce: yjwdEb +.. section: Library +plistlib now catches more errors when read binary plists and raises +InvalidFileException instead of unexpected exceptions. +.. +.. bpo: 25720 +.. date: 2017-10-29-17-52-40 +.. nonce: vSvb5h +.. section: Library +Fix the method for checking pad state of curses WINDOW. Patch by Masayuki +Yamamoto. +.. +.. bpo: 31893 +.. date: 2017-10-29-13-51-01 +.. nonce: 8LZKEz +.. section: Library +Fixed the layout of the kqueue_event structure on OpenBSD and NetBSD. Fixed +the comparison of the kqueue_event objects. +.. +.. bpo: 31891 +.. date: 2017-10-29-11-23-24 +.. nonce: 9kAPha +.. section: Library +Fixed building the curses module on NetBSD. +.. +.. bpo: 28416 +.. date: 2017-10-23-12-05-33 +.. nonce: Ldnw8X +.. section: Library +Instances of pickle.Pickler subclass with the persistent_id() method and +pickle.Unpickler subclass with the persistent_load() method no longer create +reference cycles. +.. +.. bpo: 28326 +.. date: 2017-10-22-11-06-02 +.. nonce: rxh7L4 +.. section: Library +Fix multiprocessing.Process when stdout and/or stderr is closed or None. +.. +.. bpo: 31457 +.. date: 2017-10-18-19-05-17 +.. nonce: KlE6r8 +.. section: Library +If nested log adapters are used, the inner ``process()`` methods are no +longer omitted. +.. +.. bpo: 31457 +.. date: 2017-10-18-16-48-09 +.. nonce: _ovmzp +.. section: Library +The ``manager`` property on LoggerAdapter objects is now properly settable. +.. +.. bpo: 31806 +.. date: 2017-10-17-23-27-03 +.. nonce: TzphdL +.. section: Library +Fix timeout rounding in time.sleep(), threading.Lock.acquire() and +socket.socket.settimeout() to round correctly negative timeouts between -1.0 +and 0.0. The functions now block waiting for events as expected. Previously, +the call was incorrectly non-blocking. Patch by Pablo Galindo. +.. +.. bpo: 28603 +.. date: 2017-10-17-12-29-18 +.. nonce: tGuX2C +.. section: Library +traceback: Fix a TypeError that occurred during printing of exception +tracebacks when either the current exception or an exception in its +context/cause chain is unhashable. Patch by Zane Bitter. +.. +.. bpo: 30058 +.. date: 2017-10-12-19-00-53 +.. nonce: cENtry +.. section: Library +Fixed buffer overflow in select.kqueue.control(). +.. +.. bpo: 31770 +.. date: 2017-10-12-18-45-38 +.. nonce: GV3MPx +.. section: Library +Prevent a crash when calling the ``__init__()`` method of a +``sqlite3.Cursor`` object more than once. Patch by Oren Milman. +.. +.. bpo: 31672 +.. date: 2017-10-12-02-47-16 +.. nonce: DaOkVd +.. section: Library +``idpattern`` in ``string.Template`` matched some non-ASCII characters. Now +it uses ``-i`` regular expression local flag to avoid non-ASCII characters. +.. +.. bpo: 31764 +.. date: 2017-10-11-22-18-04 +.. nonce: EMyIkK +.. section: Library +Prevent a crash in ``sqlite3.Cursor.close()`` in case the ``Cursor`` object +is uninitialized. Patch by Oren Milman. +.. +.. bpo: 31752 +.. date: 2017-10-11-00-45-01 +.. nonce: DhWevN +.. section: Library +Fix possible crash in timedelta constructor called with custom integers. +.. +.. bpo: 31701 +.. date: 2017-10-09-17-42-30 +.. nonce: NRrVel +.. section: Library +On Windows, faulthandler.enable() now ignores MSC and COM exceptions. +.. +.. bpo: 31728 +.. date: 2017-10-08-23-28-30 +.. nonce: XrVMME +.. section: Library +Prevent crashes in ``_elementtree`` due to unsafe cleanup of ``Element.text`` +and ``Element.tail``. Patch by Oren Milman. +.. +.. bpo: 31620 +.. date: 2017-10-06-04-35-31 +.. nonce: gksLA1 +.. section: Library +an empty asyncio.Queue now doesn't leak memory when queue.get pollers +timeout +.. +.. bpo: 31632 +.. date: 2017-10-04-11-37-14 +.. nonce: LiOC3C +.. section: Library +Fix method set_protocol() of class _SSLProtocolTransport in asyncio module. +This method was previously modifying a wrong reference to the protocol. +.. +.. bpo: 31675 +.. date: 2017-10-03-15-06-24 +.. nonce: Nh7jJ3 +.. section: Library +Fixed memory leaks in Tkinter's methods splitlist() and split() when pass a +string larger than 2 GiB. +.. +.. bpo: 31673 +.. date: 2017-10-03-14-37-46 +.. nonce: RFCrka +.. section: Library +Fixed typo in the name of Tkinter's method adderrorinfo(). +.. +.. bpo: 30806 +.. date: 2017-09-29 +.. nonce: lP5GrH +.. section: Library +Fix the string representation of a netrc object. +.. +.. bpo: 15037 +.. date: 2017-09-29-19-19-36 +.. nonce: ykimLK +.. section: Library +Added a workaround for getkey() in curses for ncurses 5.7 and earlier. +.. +.. bpo: 25351 +.. date: 2017-09-28-23-10-51 +.. nonce: 2JmFpF +.. section: Library +Avoid venv activate failures with undefined variables +.. +.. bpo: 25532 +.. date: 2017-09-27-08-11-38 +.. nonce: ey4Yez +.. section: Library +inspect.unwrap() will now only try to unwrap an object +sys.getrecursionlimit() times, to protect against objects which create a new +object on every attribute access. +.. +.. bpo: 30347 +.. date: 2017-09-25-14-04-30 +.. nonce: B4--_D +.. section: Library +Stop crashes when concurrently iterate over itertools.groupby() iterators. +.. +.. bpo: 31516 +.. date: 2017-09-20-18-43-01 +.. nonce: 23Yuq3 +.. section: Library +``threading.current_thread()`` should not return a dummy thread at shutdown. +.. +.. bpo: 31351 +.. date: 2017-09-17-15-24-25 +.. nonce: yQdKv- +.. section: Library +python -m ensurepip now exits with non-zero exit code if pip bootstrapping +has failed. +.. +.. bpo: 31482 +.. date: 2017-09-16-01-53-11 +.. nonce: 39s5dS +.. section: Library +``random.seed()`` now works with bytes in version=1 +.. +.. bpo: 31334 +.. date: 2017-09-04-00-22-31 +.. nonce: 9WYRfi +.. section: Library +Fix ``poll.poll([timeout])`` in the ``select`` module for arbitrary negative +timeouts on all OSes where it can only be a non-negative integer or -1. +Patch by Riccardo Coccioli. +.. +.. bpo: 31310 +.. date: 2017-08-30-18-23-54 +.. nonce: 7D1UNt +.. section: Library +multiprocessing's semaphore tracker should be launched again if crashed. +.. +.. bpo: 31308 +.. date: 2017-08-30-17-59-36 +.. nonce: KbexyC +.. section: Library +Make multiprocessing's forkserver process immune to Ctrl-C and other user +interruptions. If it crashes, restart it when necessary. +.. +.. bpo: 32105 +.. date: 2017-11-21-10-54-16 +.. nonce: 91mhWm +.. section: Documentation +Added asyncio.BaseEventLoop.connect_accepted_socket versionadded marker. +.. +.. bpo: 31537 +.. date: 2017-10-08-23-02-14 +.. nonce: SiFNM8 +.. section: Documentation +Fix incorrect usage of ``get_history_length`` in readline documentation +example code. Patch by Brad Smith. +.. +.. bpo: 30085 +.. date: 2017-09-14-18-44-50 +.. nonce: 0J9w-u +.. section: Documentation +The operator functions without double underscores are preferred for clarity. +The one with underscores are only kept for back-compatibility. +.. +.. bpo: 31380 +.. date: 2017-12-04-23-19-16 +.. nonce: VlMmHW +.. section: Tests +Skip test_httpservers test_undecodable_file on macOS: fails on APFS. +.. +.. bpo: 31705 +.. date: 2017-11-30-12-27-10 +.. nonce: yULW7O +.. section: Tests +Skip test_socket.test_sha256() on Linux kernel older than 4.5. The test +fails with ENOKEY on kernel 3.10 (on ppc64le). A fix was merged into the +kernel 4.5. +.. +.. bpo: 31174 +.. date: 2017-10-24-11-36-10 +.. nonce: xCvXcr +.. section: Tests +Fix test_tools.test_unparse: DirectoryTestCase now stores the names sample +to always test the same files. It prevents false alarms when hunting +reference leaks. +.. +.. bpo: 30695 +.. date: 2017-06-30-11-20-20 +.. nonce: lo7FQX +.. section: Tests +Add the ``set_nomemory(start, stop)`` and ``remove_mem_hooks()`` functions to +the ``_testcapi`` module. +.. +.. bpo: 32059 +.. date: 2017-11-18-11-19-28 +.. nonce: a0Hxgp +.. section: Build +``detect_modules()`` in ``setup.py`` now also searches the sysroot paths +when cross-compiling. +.. +.. bpo: 31957 +.. date: 2017-11-06-11-53-39 +.. nonce: S_1jFK +.. section: Build +Fixes Windows SDK version detection when building for Windows. +.. +.. bpo: 31609 +.. date: 2017-11-04-15-35-08 +.. nonce: k7_nBR +.. section: Build +Fixes quotes in PCbuild/clean.bat +.. +.. bpo: 31934 +.. date: 2017-11-03-15-17-50 +.. nonce: 8bUlpv +.. section: Build +Abort the build when building out of a not clean source tree. +.. +.. bpo: 31926 +.. date: 2017-11-03-10-07-14 +.. nonce: 57wE98 +.. section: Build +Fixed Argument Clinic sometimes causing compilation errors when there was +more than one function and/or method in a .c file with the same name. +.. +.. bpo: 28791 +.. date: 2017-11-02-20-30-57 +.. nonce: VaE3o8 +.. section: Build +Update Windows builds to use SQLite 3.21.0. +.. +.. bpo: 28791 +.. date: 2017-11-02-20-13-46 +.. nonce: STt3jL +.. section: Build +Update OS X installer to use SQLite 3.21.0. +.. +.. bpo: 22140 +.. date: 2017-09-26-22-39-58 +.. nonce: ZRf7Wn +.. section: Build +Prevent double substitution of prefix in python-config.sh. +.. +.. bpo: 31536 +.. date: 2017-09-20-21-32-21 +.. nonce: KUDjno +.. section: Build +Avoid wholesale rebuild after ``make regen-all`` if nothing changed. +.. +.. bpo: 1102 +.. date: 2017-11-19-09-46-27 +.. nonce: NY-g1F +.. section: Windows +Return ``None`` when ``View.Fetch()`` returns ``ERROR_NO_MORE_ITEMS`` +instead of raising ``MSIError``. +Initial patch by Anthony Tuininga. +.. +.. bpo: 31944 +.. date: 2017-11-04-15-29-47 +.. nonce: 0Bx8tZ +.. section: Windows +Fixes Modify button in Apps and Features dialog. +.. +.. bpo: 31392 +.. date: 2017-12-04-21-57-43 +.. nonce: f8huBC +.. section: macOS +Update macOS installer to use OpenSSL 1.0.2m +.. +.. bpo: 32207 +.. date: 2017-12-04-15-04-43 +.. nonce: IzyAJo +.. section: IDLE +Improve tk event exception tracebacks in IDLE. When tk event handling is +driven by IDLE's run loop, a confusing and distracting queue.EMPTY traceback +context is no longer added to tk event exception tracebacks. The traceback +is now the same as when event handling is driven by user code. Patch based +on a suggestion by Serhiy Storchaka. +.. +.. bpo: 32164 +.. date: 2017-11-28-21-47-15 +.. nonce: 2T2Na8 +.. section: IDLE +Delete unused file idlelib/tabbedpages.py. Use of TabbedPageSet in +configdialog was replaced by ttk.Notebook. +.. +.. bpo: 32100 +.. date: 2017-11-21-08-26-08 +.. nonce: P43qx2 +.. section: IDLE +IDLE: Fix old and new bugs in pathbrowser; improve tests. Patch mostly by +Cheryl Sabella. +.. +.. bpo: 31858 +.. date: 2017-10-26-20-20-19 +.. nonce: VuSA_e +.. section: IDLE +IDLE -- Restrict shell prompt manipulation to the shell. Editor and output +windows only see an empty last prompt line. This simplifies the code and +fixes a minor bug when newline is inserted. Sys.ps1, if present, is read on +Shell start-up, but is not set or changed. +.. +.. bpo: 31860 +.. date: 2017-10-24-16-21-50 +.. nonce: gECuWx +.. section: IDLE +The font sample in the IDLE configuration dialog is now editable. Changes +persist while IDLE remains open +.. +.. bpo: 31836 +.. date: 2017-10-21-15-41-53 +.. nonce: fheLME +.. section: IDLE +Test_code_module now passes if run after test_idle, which sets ps1. +The code module uses sys.ps1 if present or sets it to '>>> ' if not. +Test_code_module now properly tests both behaviors. Ditto for ps2. +.. +.. bpo: 28603 +.. date: 2017-10-17-13-26-13 +.. nonce: TMEQfp +.. section: IDLE +Fix a TypeError that caused a shell restart when printing a traceback that +includes an exception that is unhashable. Patch by Zane Bitter. +.. +.. bpo: 13802 +.. date: 2017-10-12-00-51-29 +.. nonce: VwjZRD +.. section: IDLE +Use non-Latin characters in the IDLE's Font settings sample. Even if one +selects a font that defines a limited subset of the unicode Basic +Multilingual Plane, tcl/tk will use other fonts that define a character. The +expanded example give users of non-Latin characters a better idea of what +they might see in IDLE's shell and editors. To make room for the expanded +sample, frames on the Font tab are re-arranged. The Font/Tabs help explains +a bit about the additions. +.. +.. bpo: 31460 +.. date: 2017-09-30-19-03-26 +.. nonce: HpveI6 +.. section: IDLE +Simplify the API of IDLE's Module Browser. +Passing a widget instead of an flist with a root widget opens the option of +creating a browser frame that is only part of a window. Passing a full file +name instead of pieces assumed to come from a .py file opens the possibility +of browsing python files that do not end in .py. +.. +.. bpo: 31649 +.. date: 2017-09-30-13-59-18 +.. nonce: LxN4Vb +.. section: IDLE +IDLE - Make _htest, _utest parameters keyword only. +.. +.. bpo: 31559 +.. date: 2017-09-23-12-52-24 +.. nonce: ydckYX +.. section: IDLE +Remove test order dependence in idle_test.test_browser. +.. +.. bpo: 31459 +.. date: 2017-09-22-20-26-23 +.. nonce: L0pnH9 +.. section: IDLE +Rename IDLE's module browser from Class Browser to Module Browser. The +original module-level class and method browser became a module browser, with +the addition of module-level functions, years ago. Nested classes and +functions were added yesterday. For back-compatibility, the virtual event +<>, which appears on the Keys tab of the Settings +dialog, is not changed. Patch by Cheryl Sabella. +.. +.. bpo: 31500 +.. date: 2017-09-18-10-43-03 +.. nonce: Y_YDxA +.. section: IDLE +Default fonts now are scaled on HiDPI displays. +.. +.. bpo: 1612262 +.. date: 2017-08-14-15-13-50 +.. nonce: -x_Oyq +.. section: IDLE +IDLE module browser now shows nested classes and functions. Original patches +for code and tests by Guilherme Polo and Cheryl Sabella, respectively. +.. +.. bpo: 30722 +.. date: 2017-10-23-19-45-52 +.. nonce: ioRlAu +.. section: Tools/Demos +Make redemo work with Python 3.6 and newer versions. +Also, remove the ``LOCALE`` option since it doesn't work with string +patterns in Python 3. +Patch by Christoph Sarnowski. +.. +.. bpo: 20891 +.. date: 2017-11-30-18-13-45 +.. nonce: wBnMdF +.. section: C API +Fix PyGILState_Ensure(). When PyGILState_Ensure() is called in a non-Python +thread before PyEval_InitThreads(), only call PyEval_InitThreads() after +calling PyThreadState_New() to fix a crash. +.. +.. bpo: 31532 +.. date: 2017-09-20-21-59-52 +.. nonce: s9Cw9_ +.. section: C API +Fix memory corruption due to allocator mix in getpath.c between Py_GetPath() +and Py_SetPath() +.. +.. bpo: 30697 +.. date: 2017-06-30-11-58-01 +.. nonce: Q3T_8n +.. section: C API +The ``PyExc_RecursionErrorInst`` singleton is removed and +``PyErr_NormalizeException()`` does not use it anymore. This singleton is +persistent and its members being never cleared may cause a segfault during +finalization of the interpreter. See also issue #22898. + +.. bpo: 46009 +.. date: 2021-12-08-11-06-53 +.. nonce: cL8pH0 +.. release date: 2021-12-08 +.. section: Core and Builtins +Restore behavior from 3.9 and earlier when sending non-None to newly started +generator. In 3.9 this did not affect the state of the generator. In 3.10.0 +and 3.10.1 ``gen_func().send(0)`` is equivalent to +``gen_func().throw(TypeError(...)`` which exhausts the generator. In 3.10.2 +onward, the behavior has been reverted to that of 3.9. +.. +.. bpo: 46004 +.. date: 2021-12-07-11-24-24 +.. nonce: TTEU1p +.. section: Core and Builtins +Fix the :exc:`SyntaxError` location for errors involving for loops with +invalid targets. Patch by Pablo Galindo +.. +.. bpo: 45711 +.. date: 2021-12-05-17-36-08 +.. nonce: 3TmTSw +.. section: Core and Builtins +:c:func:`!_PyErr_ChainStackItem` no longer normalizes ``exc_info`` (including +setting the traceback on the exception instance) because ``exc_info`` is +always normalized. +.. +.. bpo: 45607 +.. date: 2021-12-01-15-38-04 +.. nonce: JhuF8b +.. section: Core and Builtins +The ``__note__`` field was added to :exc:`BaseException`. It is ``None`` by +default but can be set to a string which is added to the exception's +traceback. +.. +.. bpo: 45947 +.. date: 2021-12-01-14-06-36 +.. nonce: 1XPPm_ +.. section: Core and Builtins +Place pointers to dict and values immediately before GC header. This reduces +number of dependent memory loads to access either dict or values from 3 to +1. +.. +.. bpo: 45915 +.. date: 2021-11-28-11-25-08 +.. nonce: TSGcLF +.. section: Core and Builtins +``is_valid_fd`` now uses faster ``fcntl(fd, F_GETFD)`` on Linux, macOS, and +Windows. +.. +.. bpo: 44530 +.. date: 2021-11-26-23-26-25 +.. nonce: EZ0gel +.. section: Core and Builtins +Reverts a change to the ``code.__new__`` :ref:`audit event ` +from an earlier prerelease. +.. +.. bpo: 42268 +.. date: 2021-11-26-22-31-22 +.. nonce: 3wl-09 +.. section: Core and Builtins +Fail the configure step if the selected compiler doesn't support memory +sanitizer. Patch by Pablo Galindo +.. +.. bpo: 45711 +.. date: 2021-11-25-17-51-29 +.. nonce: D2igmz +.. section: Core and Builtins +The three values of ``exc_info`` are now always consistent with each other. +In particular, the ``type`` and ``traceback`` fields are now derived from +the exception instance. This impacts the return values of +:func:`sys.exc_info` and :c:func:`PyErr_GetExcInfo()` if the exception +instance is modified while the exception is handled, as well as +:c:func:`PyErr_SetExcInfo()`, which now ignores the ``type`` and +``traceback`` arguments provided to it. +.. +.. bpo: 45727 +.. date: 2021-11-24-18-24-49 +.. nonce: _xVbbo +.. section: Core and Builtins +Refine the custom syntax error that suggests that a comma may be missing to +trigger only when the expressions are detected between parentheses or +brackets. Patch by Pablo Galindo +.. +.. bpo: 45885 +.. date: 2021-11-23-21-01-56 +.. nonce: 3IxeCX +.. section: Core and Builtins +Specialized the ``COMPARE_OP`` opcode using the PEP 659 machinery. +.. +.. bpo: 45786 +.. date: 2021-11-23-15-25-00 +.. nonce: UdEciD +.. section: Core and Builtins +Allocate space for the interpreter frame in the frame object, to avoid an +additional allocation when the frame object outlives the frame activation. +.. +.. bpo: 45614 +.. date: 2021-11-23-12-06-41 +.. nonce: fIekgI +.. section: Library +Fix :mod:`traceback` display for exceptions with invalid module name. +.. +.. bpo: 45813 +.. date: 2021-11-22-11-28-13 +.. nonce: ZMaWE2 +.. section: Core and Builtins +Fix crash when calling coro.cr_frame.clear() after coroutine has been freed. +.. +.. bpo: 45811 +.. date: 2021-11-20-02-25-06 +.. nonce: B-1Gsr +.. section: Core and Builtins +Improve the tokenizer errors when encountering invisible control characters +in the parser. Patch by Pablo Galindo +.. +.. bpo: 45848 +.. date: 2021-11-19-22-57-42 +.. nonce: HgVBJ5 +.. section: Core and Builtins +Allow the parser to obtain error lines directly from encoded files. Patch by +Pablo Galindo +.. +.. bpo: 45709 +.. date: 2021-11-19-13-17-47 +.. nonce: H_t7ut +.. section: Core and Builtins +Restore behavior from 3.10 when tracing an exception raised within a with +statement. +.. +.. bpo: 44525 +.. date: 2021-11-18-10-02-02 +.. nonce: M4xwn_ +.. section: Core and Builtins +Adds new :opcode:`COPY_FREE_VARS` opcode, to make copying of free variables +from function to frame explicit. Helps optimization of calls to Python +function. +.. +.. bpo: 45829 +.. date: 2021-11-17-10-14-35 +.. nonce: 5Cf6fY +.. section: Core and Builtins +Specialize :opcode:`BINARY_SUBSCR` for classes with a ``__getitem__`` method +implemented in Python +.. +.. bpo: 45826 +.. date: 2021-11-17-08-05-27 +.. nonce: OERoTm +.. section: Core and Builtins +Fixed a crash when calling ``.with_traceback(None)`` on ``NameError``. This +occurs internally in ``unittest.TestCase.assertRaises()``. +.. +.. bpo: 45822 +.. date: 2021-11-16-19-41-04 +.. nonce: OT6ueS +.. section: Core and Builtins +Fixed a bug in the parser that was causing it to not respect :pep:`263` +coding cookies when no flags are provided. Patch by Pablo Galindo +.. +.. bpo: 45820 +.. date: 2021-11-16-19-00-27 +.. nonce: 2X6Psr +.. section: Core and Builtins +Fix a segfault when the parser fails without reading any input. Patch by +Pablo Galindo +.. +.. bpo: 45636 +.. date: 2021-11-15-13-32-54 +.. nonce: RDlTdL +.. section: Core and Builtins +Simplify the implementation of :opcode:`BINARY_OP` by indexing into an array +of function pointers (rather than switching on the oparg). +.. +.. bpo: 42540 +.. date: 2021-11-15-12-08-27 +.. nonce: V2w107 +.. section: Core and Builtins +Fix crash when :func:`os.fork` is called with an active non-default memory +allocator. +.. +.. bpo: 45738 +.. date: 2021-11-14-00-14-45 +.. nonce: e0cgKd +.. section: Core and Builtins +Fix computation of error location for invalid continuation characters in the +parser. Patch by Pablo Galindo. +.. +.. bpo: 45636 +.. date: 2021-11-11-19-11-57 +.. nonce: 2fyIVm +.. section: Core and Builtins +Remove an existing "fast path" for old-style string formatting, since it no +longer appears to have any measurable impact. +.. +.. bpo: 45753 +.. date: 2021-11-11-17-14-21 +.. nonce: nEBFcC +.. section: Core and Builtins +Make recursion checks a bit more efficient by tracking amount of calls left +before overflow. +.. +.. bpo: 45773 +.. date: 2021-11-09-13-01-35 +.. nonce: POU8A4 +.. section: Core and Builtins +Fix a compiler hang when attempting to optimize certain jump patterns. +.. +.. bpo: 45764 +.. date: 2021-11-09-12-19-22 +.. nonce: 8RLhWL +.. section: Core and Builtins +The parser now gives a better error message when leaving out the opening +parenthesis ``(`` after a ``def``-statement:: +>>> def f: +File "", line 1 +def f: +^ +SyntaxError: expected '(' +.. +.. bpo: 45609 +.. date: 2021-10-27-21-00-49 +.. nonce: L1GKPX +.. section: Core and Builtins +Specialized the ``STORE_SUBSCR`` opcode using the PEP 659 machinery. +.. +.. bpo: 45636 +.. date: 2021-10-27-15-14-31 +.. nonce: K2X7QS +.. section: Core and Builtins +Replace all numeric ``BINARY_*`` and ``INPLACE_*`` instructions with a +single :opcode:`BINARY_OP` implementation. +.. +.. bpo: 45582 +.. date: 2021-10-23-00-39-31 +.. nonce: YONPuo +.. section: Core and Builtins +Path calculation (known as ``getpath``) has been reimplemented as a frozen +Python module. This should have no visible impact, but may affect +calculation of all paths referenced in :mod:`sys` and :mod:`sysconfig`. +.. +.. bpo: 45450 +.. date: 2021-10-12-18-22-44 +.. nonce: d9a-bX +.. section: Core and Builtins +Improve the syntax error message for parenthesized arguments. Patch by Pablo +Galindo. +.. +.. bpo: 27946 +.. date: 2021-12-04-20-08-42 +.. nonce: -Vuarf +.. section: Library +Fix possible crash when getting an attribute of +:class:`xml.etree.ElementTree.Element` simultaneously with replacing the +``attrib`` dict. +.. +.. bpo: 45711 +.. date: 2021-12-02-17-22-06 +.. nonce: D6jsdv +.. section: Library +Make :mod:`asyncio` normalize exceptions as soon as they are captured with +:c:func:`PyErr_Fetch`, and before they are stored as an exc_info triplet. +This brings :mod:`asyncio` in line with the rest of the codebase, where an +exc_info triplet is always normalized. +.. +.. bpo: 23819 +.. date: 2021-12-02-14-37-30 +.. nonce: An6vkT +.. section: Library +Replaced asserts with exceptions in asyncio, patch by Kumar Aditya. +.. +.. bpo: 13236 +.. date: 2021-11-30-13-52-02 +.. nonce: FmJIkO +.. section: Library +:class:`unittest.TextTestResult` and :class:`unittest.TextTestRunner` flush +now the output stream more often. +.. +.. bpo: 45917 +.. date: 2021-11-28-17-24-11 +.. nonce: J5TIrd +.. section: Library +Added :func:`math.exp2`:, which returns 2 raised to the power of x. +.. +.. bpo: 37658 +.. date: 2021-11-28-15-30-34 +.. nonce: 8Hno7d +.. section: Library +Fix issue when on certain conditions ``asyncio.wait_for()`` may allow a +coroutine to complete successfully, but fail to return the result, +potentially causing memory leaks or other issues. +.. +.. bpo: 45876 +.. date: 2021-11-23-15-36-56 +.. nonce: NO8Yaj +.. section: Library +Improve the accuracy of stdev() and pstdev() in the statistics module. When +the inputs are floats or fractions, the output is a correctly rounded float +.. +.. bpo: 44649 +.. date: 2021-11-21-20-50-42 +.. nonce: E8M936 +.. section: Library +Handle dataclass(slots=True) with a field that has default a default value, +but for which init=False. +.. +.. bpo: 45803 +.. date: 2021-11-20-17-04-25 +.. nonce: wSgFOy +.. section: Library +Added missing kw_only parameter to dataclasses.make_dataclass(). +.. +.. bpo: 45837 +.. date: 2021-11-18-13-13-19 +.. nonce: aGyr1I +.. section: Library +The :meth:`!turtle.RawTurtle.settiltangle` is deprecated since Python 3.1, it +now emits a deprecation warning and will be removed in Python 3.13. +Use :meth:`turtle.RawTurtle.tiltangle` instead. +:meth:`turtle.RawTurtle.tiltangle` was earlier incorrectly marked as +deprecated, its docstring has been corrected. +Patch by Hugo van Kemenade. +.. +.. bpo: 45831 +.. date: 2021-11-17-19-25-37 +.. nonce: 9-TojK +.. section: Library +:mod:`faulthandler` can now write ASCII-only strings (like filenames and +function names) with a single write() syscall when dumping a traceback. It +reduces the risk of getting an unreadable dump when two threads or two +processes dump a traceback to the same file (like stderr) at the same time. +Patch by Victor Stinner. +.. +.. bpo: 45828 +.. date: 2021-11-17-11-40-21 +.. nonce: kQU35U +.. section: Library +:mod:`sqlite` C callbacks now use unraisable exceptions if callback +tracebacks are enabled. Patch by Erlend E. Aasland. +.. +.. bpo: 41735 +.. date: 2021-11-16-18-13-49 +.. nonce: D72UY1 +.. section: Library +Fix thread lock in ``zlib.Decompress.flush()`` method before +``PyObject_GetBuffer``. +.. +.. bpo: 45235 +.. date: 2021-11-11-13-03-17 +.. nonce: 8ZbkHa +.. section: Library +Reverted an argparse bugfix that caused regression in the handling of +default arguments for subparsers. This prevented leaf level arguments from +taking precedence over root level arguments. +.. +.. bpo: 45754 +.. date: 2021-11-09-15-48-38 +.. nonce: c-JDto +.. section: Library +Fix a regression in Python 3.11a1 and 3.11a2 where :mod:`sqlite3` +incorrectly would use ``SQLITE_LIMIT_LENGTH`` when checking SQL statement +lengths. Now, ``SQLITE_LIMIT_SQL_LENGTH`` is used. Patch by Erlend E. +Aasland. +.. +.. bpo: 45766 +.. date: 2021-11-09-09-18-06 +.. nonce: dvbcMf +.. section: Library +Added *proportional* option to :meth:`statistics.linear_regression`. +.. +.. bpo: 45765 +.. date: 2021-11-09-09-04-19 +.. nonce: JVobxK +.. section: Library +In importlib.metadata, fix distribution discovery for an empty path. +.. +.. bpo: 45757 +.. date: 2021-11-08-23-22-14 +.. nonce: MHZHt3 +.. section: Library +Fix bug where :mod:`dis` produced an incorrect oparg when +:opcode:`EXTENDED_ARG` is followed by an opcode that does not use its +argument. +.. +.. bpo: 45644 +.. date: 2021-11-06-17-47-46 +.. nonce: ZMqHD_ +.. section: Library +In-place JSON file formatting using ``python3 -m json.tool infile infile`` +now works correctly, previously it left the file empty. Patch by Chris +Wesseling. +.. +.. bpo: 45703 +.. date: 2021-11-03-13-41-49 +.. nonce: 35AagL +.. section: Library +When a namespace package is imported before another module from the same +namespace is created/installed in a different :data:`sys.path` location +while the program is running, calling the +:func:`importlib.invalidate_caches` function will now also guarantee the new +module is noticed. +.. +.. bpo: 45535 +.. date: 2021-10-29-16-28-06 +.. nonce: n8NiOE +.. section: Library +Improve output of ``dir()`` with Enums. +.. +.. bpo: 45664 +.. date: 2021-10-28-23-40-54 +.. nonce: 7dqtxQ +.. section: Library +Fix :func:`types.resolve_bases` and :func:`types.new_class` for +:class:`types.GenericAlias` instance as a base. +.. +.. bpo: 45663 +.. date: 2021-10-28-23-11-59 +.. nonce: J90N5R +.. section: Library +Fix :func:`dataclasses.is_dataclass` for dataclasses which are subclasses of +:class:`types.GenericAlias`. +.. +.. bpo: 45662 +.. date: 2021-10-28-22-58-14 +.. nonce: sJd7Ir +.. section: Library +Fix the repr of :data:`dataclasses.InitVar` with a type alias to the +built-in class, e.g. ``InitVar[list[int]]``. +.. +.. bpo: 43137 +.. date: 2021-10-25-12-51-02 +.. nonce: apo7jY +.. section: Library +Launch GNOME web browsers via gio tool instead of obsolete gvfs-open +.. +.. bpo: 45429 +.. date: 2021-10-25-01-22-49 +.. nonce: VaEyN9 +.. section: Library +On Windows, :func:`time.sleep` now uses a waitable timer which supports +high-resolution timers. Patch by Donghee Na and Eryk Sun. +.. +.. bpo: 37295 +.. date: 2021-10-18-16-08-55 +.. nonce: wBEWH2 +.. section: Library +Optimize :func:`math.comb` and :func:`math.perm`. +.. +.. bpo: 45514 +.. date: 2021-10-18-14-25-35 +.. nonce: YmlzIl +.. section: Library +Deprecated legacy functions in :mod:`importlib.resources`. +.. +.. bpo: 45507 +.. date: 2021-10-18-14-00-01 +.. nonce: lDotNV +.. section: Library +Add tests for truncated/missing trailers in gzip.decompress implementation. +.. +.. bpo: 45359 +.. date: 2021-10-03-22-27-35 +.. nonce: LX_uxe +.. section: Library +Implement :pep:`585` for :class:`graphlib.TopologicalSorter`. +.. +.. bpo: 44733 +.. date: 2021-07-26-13-33-37 +.. nonce: 88LrP1 +.. section: Library +Add ``max_tasks_per_child`` to +:class:`concurrent.futures.ProcessPoolExecutor`. This allows users to +specify the maximum number of tasks a single process should execute before +the process needs to be restarted. +.. +.. bpo: 28806 +.. date: 2021-05-24-13-48-34 +.. nonce: PkNw5D +.. section: Library +Improve netrc library. netrc file no longer needs to contain all tokens. And +if the login name is anonymous, security check is no longer need. +.. +.. bpo: 43498 +.. date: 2021-04-20-14-14-16 +.. nonce: L_Hq-8 +.. section: Library +Avoid a possible *"RuntimeError: dictionary changed size during iteration"* +when adjusting the process count of :class:`ProcessPoolExecutor`. +.. +.. bpo: 42158 +.. date: 2020-11-10-17-46-12 +.. nonce: OhxAiH +.. section: Library +Add MIME types for N-quads, N-triples, Notation3 and TriG to ``mimetypes``. +.. +.. bpo: 30533 +.. date: 2020-06-16-18-00-56 +.. nonce: StL57t +.. section: Library +Add :func:`inspect.getmembers_static` , it return all members without +triggering dynamic lookup via the descriptor protocol. Patch by Weipeng +Hong. +.. +.. bpo: 42238 +.. date: 2021-11-20-02-46-39 +.. nonce: hlfMIc +.. section: Documentation +``make -C Doc suspicious`` will be removed soon in favor of ``make -C Doc +check``, mark it as deprecated. +.. +.. bpo: 45840 +.. date: 2021-11-19-02-02-32 +.. nonce: A51B2S +.. section: Documentation +Improve cross-references in the documentation for the data model. +.. +.. bpo: 45640 +.. date: 2021-11-18-16-44-12 +.. nonce: lSpc2A +.. section: Documentation +Properly marked-up grammar tokens in the documentation are now clickable and +take you to the definition of a given piece of grammar. Patch by Arthur +Milchior. +.. +.. bpo: 45788 +.. date: 2021-11-18-00-07-40 +.. nonce: qibUoB +.. section: Documentation +Link doc for sys.prefix to sysconfig doc on installation paths. +.. +.. bpo: 45772 +.. date: 2021-11-09-13-10-55 +.. nonce: EdrM3t +.. section: Documentation +``socket.socket`` documentation is corrected to a class from a function. +.. +.. bpo: 45392 +.. date: 2021-11-06-10-54-17 +.. nonce: JZnVOz +.. section: Documentation +Update the docstring of the :class:`type` built-in to remove a redundant +line and to mention keyword arguments for the constructor. +.. +.. bpo: 45250 +.. date: 2021-10-22-12-09-18 +.. nonce: Iit5-Y +.. section: Documentation +Update the documentation to note that CPython does not consistently require +iterators to define ``__iter__``. +.. +.. bpo: 25381 +.. date: 2021-06-21-17-51-51 +.. nonce: 7Kn-_H +.. section: Documentation +In the extending chapter of the extending doc, update a paragraph about the +global variables containing exception information. +.. +.. bpo: 43905 +.. date: 2021-05-24-05-00-12 +.. nonce: tBIndE +.. section: Documentation +Expanded :func:`~dataclasses.astuple` and :func:`~dataclasses.asdict` docs, +warning about deepcopy being applied and providing a workaround. +.. +.. bpo: 45695 +.. date: 2021-12-03-14-19-16 +.. nonce: QKBn2E +.. section: Tests +Out-of-tree builds with a read-only source directory are now tested by CI. +.. +.. bpo: 19460 +.. date: 2021-11-28-15-25-02 +.. nonce: lr0aWs +.. section: Tests +Add new Test for ``Lib/email/mime/nonmultipart.py::MIMENonMultipart``. +.. +.. bpo: 45835 +.. date: 2021-11-17-14-28-08 +.. nonce: Mgyhjx +.. section: Tests +Fix race condition in test_queue tests with multiple "feeder" threads. +.. +.. bpo: 45783 +.. date: 2021-11-11-13-56-00 +.. nonce: 8k1Rng +.. section: Tests +The test for the freeze tool now handles file moves and deletions. +.. +.. bpo: 45745 +.. date: 2021-11-10-12-01-28 +.. nonce: wX5B3K +.. section: Tests +Remove the ``--findleaks`` command line option of regrtest: use the +``--fail-env-changed`` option instead. Since Python 3.7, it was a deprecated +alias to the ``--fail-env-changed`` option. +.. +.. bpo: 45701 +.. date: 2021-10-31-10-58-45 +.. nonce: r0LAUL +.. section: Tests +Add tests with ``tuple`` type with :func:`functools.lru_cache` to +``test_functools``. +.. +.. bpo: 44035 +.. date: 2021-12-06-09-31-27 +.. nonce: BiO4XC +.. section: Build +CI now verifies that autoconf files have been regenerated with a current and +unpatched autoconf package. +.. +.. bpo: 45950 +.. date: 2021-12-01-17-28-39 +.. nonce: eEVLoz +.. section: Build +The build system now uses a :program:`_bootstrap_python` interpreter for +freezing and deepfreezing again. To speed up build process the build tools +:program:`_bootstrap_python` and :program:`_freeze_module` are no longer +build with LTO. +.. +.. bpo: 45881 +.. date: 2021-11-29-16-32-55 +.. nonce: 7597J6 +.. section: Build +The :program:`configure` script now accepts ``--with-build-python`` and +``--with-freeze-module`` options to make cross compiling easier. +.. +.. bpo: 40280 +.. date: 2021-11-29-14-37-29 +.. nonce: UlTMR8 +.. section: Build +Emscripten platform now uses ``.wasm`` suffix by default. +.. +.. bpo: 40280 +.. date: 2021-11-29-11-24-45 +.. nonce: Knx7d7 +.. section: Build +Disable unusable core extension modules on WASM/Emscripten targets. +.. +.. bpo: 40280 +.. date: 2021-11-26-14-09-04 +.. nonce: ZLpwQf +.. section: Build +``configure`` now checks for socket ``shutdown`` function. The check makes +it possible to disable ``SYS_shutdown`` with ``ac_cv_func_shutdown=no`` in +CONFIG_SITE. +.. +.. bpo: 40280 +.. date: 2021-11-26-09-10-19 +.. nonce: xmiMJl +.. section: Build +``configure`` now checks for functions ``fork1, getegid, geteuid, getgid, +getppid, getuid, opendir, pipe, system, wait, ttyname``. +.. +.. bpo: 33393 +.. date: 2021-11-25-20-26-06 +.. nonce: 24YNtM +.. section: Build +Update ``config.guess`` to 2021-06-03 and ``config.sub`` to 2021-08-14. +``Makefile`` now has an ``update-config`` target to make updating more +convenient. +.. +.. bpo: 45866 +.. date: 2021-11-25-13-53-36 +.. nonce: ZH1W8N +.. section: Build +``make regen-all`` now produces the same output when run from a directory +other than the source tree: when building Python out of the source tree. +pegen now strips directory of the "generated by pygen from " +header Patch by Victor Stinner. +.. +.. bpo: 40280 +.. date: 2021-11-25-10-55-03 +.. nonce: E9-gsQ +.. section: Build +``configure`` now accepts machine ``wasm32`` or ``wasm64`` and OS ``wasi`` +or ``emscripten`` for cross building, e.g. ``wasm32-unknown-emscripten``, +``wasm32-wasi``, or ``wasm32-unknown-wasi``. +.. +.. bpo: 41498 +.. date: 2021-11-25-09-15-04 +.. nonce: qAk5eo +.. section: Build +Python now compiles on platforms without ``sigset_t``. Several functions in +:mod:`signal` are not available when ``sigset_t`` is missing. +Based on patch by Roman Yurchak for pyodide. +.. +.. bpo: 45881 +.. date: 2021-11-24-17-14-06 +.. nonce: GTXXLk +.. section: Build +``setup.py`` now uses ``CC`` from environment first to discover multiarch +and cross compile paths. +.. +.. bpo: 45886 +.. date: 2021-11-23-23-37-49 +.. nonce: _Ulnh- +.. section: Build +The ``_freeze_module`` program path can now be overridden on the command +line, e.g. ``make FREEZE_MODULE=../x86_64/Program/_freeze_module``. +.. +.. bpo: 45873 +.. date: 2021-11-23-04-28-40 +.. nonce: 9dldZ4 +.. section: Build +Get rid of the ``_bootstrap_python`` build step. The deepfreeze.py script is +now run using ``$(PYTHON_FOR_REGEN)`` which can be Python 3.7 or newer (on +Windows, 3.8 or newer). +.. +.. bpo: 45847 +.. date: 2021-11-19-17-57-57 +.. nonce: 9phcpd +.. section: Build +Port builtin hashlib extensions to ``PY_STDLIB_MOD`` macro and ``addext()``. +.. +.. bpo: 45723 +.. date: 2021-11-19-15-42-27 +.. nonce: vwIJWI +.. section: Build +Add ``autoconf`` helpers for saving and restoring environment variables: +* ``SAVE_ENV``: Save ``$CFLAGS``, ``$LDFLAGS``, ``$LIBS``, and +``$CPPFLAGS``. +* ``RESTORE_ENV``: Restore ``$CFLAGS``, ``$LDFLAGS``, ``$LIBS``, and +``$CPPFLAGS``. +* ``WITH_SAVE_ENV([SCRIPT])``: Run ``SCRIPT`` wrapped with ``SAVE_ENV`` and +``RESTORE_ENV``. +Patch by Erlend E. Aasland. +.. +.. bpo: 45573 +.. date: 2021-11-18-13-31-02 +.. nonce: LCjGB8 +.. section: Build +Mandatory core modules, that are required to bootstrap Python, are now in +``Modules/Setup.bootstrap``. +.. +.. bpo: 45573 +.. date: 2021-11-18-12-18-43 +.. nonce: xsMZzn +.. section: Build +``configure`` now creates ``Modules/Setup.stdlib`` with conditionally +enabled/disabled extension module lines. The file is not used, yet. +.. +.. bpo: 45573 +.. date: 2021-11-17-19-02-51 +.. nonce: GMNdun +.. section: Build +``configure`` now uses a unified format to set state, compiler flags, and +linker flags in Makefile. The new macro ``PY_STDLIB_MOD`` sets three +variables that are consumed by ``Modules/Setup`` and ``setup.py``. +.. +.. bpo: 45816 +.. date: 2021-11-16-14-44-06 +.. nonce: nbdmVK +.. section: Build +Python now supports building with Visual Studio 2022 (MSVC v143, VS Version +17.0). Patch by Jeremiah Vivian. +.. +.. bpo: 45800 +.. date: 2021-11-13-16-40-05 +.. nonce: 5Hz6nr +.. section: Build +Settings for :mod:`pyexpat` C extension are now detected by ``configure``. +The bundled ``expat`` library is built in ``Makefile``. +.. +.. bpo: 45798 +.. date: 2021-11-13-10-18-22 +.. nonce: IraaTs +.. section: Build +Settings for :mod:`decimal` internal C extension are now detected by +``configure``. The bundled ``libmpdec`` library is built in ``Makefile``. +.. +.. bpo: 45723 +.. date: 2021-11-10-16-13-02 +.. nonce: B5gCB1 +.. section: Build +:program:`configure` has a new option ``--with-pkg-config`` to disable or +require pkg-config. +.. +.. bpo: 45774 +.. date: 2021-11-09-23-30-12 +.. nonce: Mwm3ZR +.. section: Build +The build dependencies for :mod:`sqlite3` are now detected by ``configure`` +and ``pkg-config``. Patch by Erlend E. Aasland. +.. +.. bpo: 45763 +.. date: 2021-11-09-10-15-33 +.. nonce: gP-vrX +.. section: Build +The build dependencies for :mod:`zlib`, :mod:`bz2`, and :mod:`lzma` are now +detected by ``configure``. +.. +.. bpo: 45747 +.. date: 2021-11-08-11-31-48 +.. nonce: AODmk_ +.. section: Build +gdbm and dbm build dependencies are now detected by ``configure``. +.. +.. bpo: 45743 +.. date: 2021-11-08-08-58-06 +.. nonce: fZ8CTi +.. section: Build +On macOS, the build system no longer passes ``search_paths_first`` to the +linker. The flag has been the default since Xcode 4 / macOS 10.6. +.. +.. bpo: 45723 +.. date: 2021-11-07-10-45-40 +.. nonce: AreusF +.. section: Build +``configure.ac`` is now compatible with autoconf 2.71. Deprecated checks +``STDC_HEADERS`` and ``AC_HEADER_TIME`` have been removed. +.. +.. bpo: 45723 +.. date: 2021-11-07-10-36-12 +.. nonce: JNwKSG +.. section: Build +``configure`` now prints a warning when pkg-config is missing. +.. +.. bpo: 45731 +.. date: 2021-11-05-20-56-29 +.. nonce: 9SDnDf +.. section: Build +``configure --enable-loadable-sqlite-extensions`` is now handled by new +``PY_SQLITE_ENABLE_LOAD_EXTENSION`` macro instead of logic in setup.py. +.. +.. bpo: 45723 +.. date: 2021-11-05-15-09-49 +.. nonce: gfSxur +.. section: Build +configure.ac now uses custom helper macros and ``AC_CACHE_CHECK`` to +simplify and speed up configure runs. +.. +.. bpo: 45696 +.. date: 2021-11-03-00-19-50 +.. nonce: eKs46f +.. section: Build +Skip the marshal step for frozen modules by generating C code that produces +a set of ready-to-use code objects. This speeds up startup time by another +10% or more. +.. +.. bpo: 45561 +.. date: 2021-10-21-14-38-30 +.. nonce: PVqhZE +.. section: Build +Run smelly.py tool from $(srcdir). +.. +.. bpo: 46105 +.. date: 2021-12-08-16-36-20 +.. nonce: t1mJ6Q +.. section: Windows +Fixed calculation of :data:`sys.path` in a venv on Windows. +.. +.. bpo: 45901 +.. date: 2021-11-26-18-17-41 +.. nonce: c5IBqM +.. section: Windows +When installed through the Microsoft Store and set as the default app for +:file:`*.py` files, command line arguments will now be passed to Python when +invoking a script without explicitly launching Python (that is, ``script.py +args`` rather than ``python script.py args``). +.. +.. bpo: 45616 +.. date: 2021-11-23-11-44-42 +.. nonce: K52PLZ +.. section: Windows +Fix Python Launcher's ability to distinguish between versions 3.1 and 3.10 +when either one is explicitly requested. Previously, 3.1 would be used if +3.10 was requested but not installed, and 3.10 would be used if 3.1 was +requested but 3.10 was installed. +.. +.. bpo: 45850 +.. date: 2021-11-20-00-06-59 +.. nonce: q9lofz +.. section: Windows +Implement changes to build with deep-frozen modules on Windows. Note that we +now require Python 3.10 as the "bootstrap" or "host" Python. +.. +.. bpo: 45732 +.. date: 2021-11-08-21-53-11 +.. nonce: idl5kx +.. section: Windows +Updates bundled Tcl/Tk to 8.6.12. +.. +.. bpo: 45720 +.. date: 2021-11-05-01-05-46 +.. nonce: 47Nc5I +.. section: Windows +Internal reference to :file:`shlwapi.dll` was dropped to help improve +startup time. This DLL will no longer be loaded at the start of every Python +process. +.. +.. bpo: 45732 +.. date: 2021-12-05-23-52-03 +.. nonce: -BWrnh +.. section: macOS +Update python.org macOS installer to use Tcl/Tk 8.6.12. +.. +.. bpo: 39026 +.. date: 2021-11-09-15-42-11 +.. nonce: sUnYWn +.. section: C API +Fix Python.h to build C extensions with Xcode: remove a relative include +from ``Include/cpython/pystate.h``. + +.. bpo: 23285 +.. date: 8948 +.. nonce: bJJA8B +.. release date: 2015-02-08 +.. section: Core and Builtins +PEP 475 - EINTR handling. +.. +.. bpo: 22735 +.. date: 8947 +.. nonce: mFEX9n +.. section: Core and Builtins +Fix many edge cases (including crashes) involving custom mro() +implementations. +.. +.. bpo: 22896 +.. date: 8946 +.. nonce: xSDAHK +.. section: Core and Builtins +Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer() and +PyObject_AsWriteBuffer(). +.. +.. bpo: 21295 +.. date: 8945 +.. nonce: LYq9nF +.. section: Core and Builtins +Revert some changes (issue #16795) to AST line numbers and column offsets +that constituted a regression. +.. +.. bpo: 22986 +.. date: 8944 +.. nonce: yay2Lv +.. section: Core and Builtins +Allow changing an object's __class__ between a dynamic type and static type +in some cases. +.. +.. bpo: 15859 +.. date: 8943 +.. nonce: Fs5mE2 +.. section: Core and Builtins +PyUnicode_EncodeFSDefault(), PyUnicode_EncodeMBCS() and +PyUnicode_EncodeCodePage() now raise an exception if the object is not a +Unicode object. For PyUnicode_EncodeFSDefault(), it was already the case on +platforms other than Windows. Patch written by Campbell Barton. +.. +.. bpo: 21408 +.. date: 8942 +.. nonce: Lz6P3P +.. section: Core and Builtins +The default __ne__() now returns NotImplemented if __eq__() returned +NotImplemented. Original patch by Martin Panter. +.. +.. bpo: 23321 +.. date: 8941 +.. nonce: HQelge +.. section: Core and Builtins +Fixed a crash in str.decode() when error handler returned replacement string +longer than malformed input data. +.. +.. bpo: 22286 +.. date: 8940 +.. nonce: l6Qyy1 +.. section: Core and Builtins +The "backslashreplace" error handlers now works with decoding and +translating. +.. +.. bpo: 23253 +.. date: 8939 +.. nonce: p4B1H- +.. section: Core and Builtins +Delay-load ShellExecute[AW] in os.startfile for reduced startup overhead on +Windows. +.. +.. bpo: 22038 +.. date: 8938 +.. nonce: BMZUHx +.. section: Core and Builtins +pyatomic.h now uses stdatomic.h or GCC built-in functions for atomic memory +access if available. Patch written by Vitor de Lima and Gustavo Temple. +.. +.. bpo: 20284 +.. date: 8937 +.. nonce: CH8wpD +.. section: Core and Builtins +%-interpolation (aka printf) formatting added for bytes and bytearray. +.. +.. bpo: 23048 +.. date: 8936 +.. nonce: X5BUd3 +.. section: Core and Builtins +Fix jumping out of an infinite while loop in the pdb. +.. +.. bpo: 20335 +.. date: 8935 +.. nonce: YcAPOs +.. section: Core and Builtins +bytes constructor now raises TypeError when encoding or errors is specified +with non-string argument. Based on patch by Renaud Blanch. +.. +.. bpo: 22834 +.. date: 8934 +.. nonce: N1kAXN +.. section: Core and Builtins +If the current working directory ends up being set to a non-existent +directory then import will no longer raise FileNotFoundError. +.. +.. bpo: 22869 +.. date: 8933 +.. nonce: rAWg-V +.. section: Core and Builtins +Move the interpreter startup & shutdown code to a new dedicated +pylifecycle.c module +.. +.. bpo: 22847 +.. date: 8932 +.. nonce: 6baj9f +.. section: Core and Builtins +Improve method cache efficiency. +.. +.. bpo: 22335 +.. date: 8931 +.. nonce: DWsXiy +.. section: Core and Builtins +Fix crash when trying to enlarge a bytearray to 0x7fffffff bytes on a 32-bit +platform. +.. +.. bpo: 22653 +.. date: 8930 +.. nonce: pCNlpv +.. section: Core and Builtins +Fix an assertion failure in debug mode when doing a reentrant dict insertion +in debug mode. +.. +.. bpo: 22643 +.. date: 8929 +.. nonce: xv8xev +.. section: Core and Builtins +Fix integer overflow in Unicode case operations (upper, lower, title, +swapcase, casefold). +.. +.. bpo: 17636 +.. date: 8928 +.. nonce: wiqnhw +.. section: Core and Builtins +Circular imports involving relative imports are now supported. +.. +.. bpo: 22604 +.. date: 8927 +.. nonce: yii-It +.. section: Core and Builtins +Fix assertion error in debug mode when dividing a complex number by +(nan+0j). +.. +.. bpo: 21052 +.. date: 8926 +.. nonce: -sf3tp +.. section: Core and Builtins +Do not raise ImportWarning when sys.path_hooks or sys.meta_path are set to +None. +.. +.. bpo: 16518 +.. date: 8925 +.. nonce: UADwcN +.. section: Core and Builtins +Use 'bytes-like object required' in error messages that previously used the +far more cryptic "'x' does not support the buffer protocol. +.. +.. bpo: 22470 +.. date: 8924 +.. nonce: igrgN2 +.. section: Core and Builtins +Fixed integer overflow issues in "backslashreplace", "xmlcharrefreplace", +and "surrogatepass" error handlers. +.. +.. bpo: 22540 +.. date: 8923 +.. nonce: FM72m- +.. section: Core and Builtins +speed up ``PyObject_IsInstance`` and ``PyObject_IsSubclass`` in the common case +that the second argument has metaclass ``type``. +.. +.. bpo: 18711 +.. date: 8922 +.. nonce: ds5wQa +.. section: Core and Builtins +Add a new ``PyErr_FormatV`` function, similar to ``PyErr_Format`` but accepting +a ``va_list`` argument. +.. +.. bpo: 22520 +.. date: 8921 +.. nonce: ZPJXSq +.. section: Core and Builtins +Fix overflow checking when generating the repr of a unicode object. +.. +.. bpo: 22519 +.. date: 8920 +.. nonce: xvJVg0 +.. section: Core and Builtins +Fix overflow checking in PyBytes_Repr. +.. +.. bpo: 22518 +.. date: 8919 +.. nonce: C9T6ed +.. section: Core and Builtins +Fix integer overflow issues in latin-1 encoding. +.. +.. bpo: 16324 +.. date: 8918 +.. nonce: YfrBNz +.. section: Core and Builtins +_charset parameter of MIMEText now also accepts email.charset.Charset +instances. Initial patch by Claude Paroz. +.. +.. bpo: 1764286 +.. date: 8917 +.. nonce: L4seL2 +.. section: Core and Builtins +Fix inspect.getsource() to support decorated functions. Patch by Claudiu +Popa. +.. +.. bpo: 18554 +.. date: 8916 +.. nonce: hxnaui +.. section: Core and Builtins +os.__all__ includes posix functions. +.. +.. bpo: 21391 +.. date: 8915 +.. nonce: 3jntPd +.. section: Core and Builtins +Use os.path.abspath in the shutil module. +.. +.. bpo: 11471 +.. date: 8914 +.. nonce: Uu752F +.. section: Core and Builtins +avoid generating a JUMP_FORWARD instruction at the end of an if-block if +there is no else-clause. Original patch by Eugene Toder. +.. +.. bpo: 22215 +.. date: 8913 +.. nonce: IBFi6H +.. section: Core and Builtins +Now ValueError is raised instead of TypeError when str or bytes argument +contains not permitted null character or byte. +.. +.. bpo: 22258 +.. date: 8912 +.. nonce: 4FszMt +.. section: Core and Builtins +Fix the internal function set_inheritable() on Illumos. This platform +exposes the function ``ioctl(FIOCLEX)``, but calling it fails with errno is +ENOTTY: "Inappropriate ioctl for device". set_inheritable() now falls back +to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``). +.. +.. bpo: 21389 +.. date: 8911 +.. nonce: dnWZBn +.. section: Core and Builtins +Displaying the __qualname__ of the underlying function in the repr of a +bound method. +.. +.. bpo: 22206 +.. date: 8910 +.. nonce: 0i_ihB +.. section: Core and Builtins +Using pthread, PyThread_create_key() now sets errno to ENOMEM and returns -1 +(error) on integer overflow. +.. +.. bpo: 20184 +.. date: 8909 +.. nonce: bb3uHY +.. section: Core and Builtins +Argument Clinic based signature introspection added for 30 of the builtin +functions. +.. +.. bpo: 22116 +.. date: 8908 +.. nonce: auVmIt +.. section: Core and Builtins +C functions and methods (of the 'builtin_function_or_method' type) can now +be weakref'ed. Patch by Wei Wu. +.. +.. bpo: 22077 +.. date: 8907 +.. nonce: KZUDR- +.. section: Core and Builtins +Improve index error messages for bytearrays, bytes, lists, and tuples by +adding 'or slices'. Added ', not ' for bytearrays. Original patch +by Claudiu Popa. +.. +.. bpo: 20179 +.. date: 8906 +.. nonce: Nvhffc +.. section: Core and Builtins +Apply Argument Clinic to bytes and bytearray. Patch by Tal Einat. +.. +.. bpo: 22082 +.. date: 8905 +.. nonce: 6X8Qmg +.. section: Core and Builtins +Clear interned strings in slotdefs. +.. +.. bpo: 0 +.. date: 8904 +.. nonce: tuMnCc +.. section: Core and Builtins +Upgrade Unicode database to Unicode 7.0.0. +.. +.. bpo: 21897 +.. date: 8903 +.. nonce: kiOGHe +.. section: Core and Builtins +Fix a crash with the f_locals attribute with closure variables when +frame.clear() has been called. +.. +.. bpo: 21205 +.. date: 8902 +.. nonce: wZsx1K +.. section: Core and Builtins +Add a new ``__qualname__`` attribute to generator, the qualified name, and +use it in the representation of a generator (``repr(gen)``). The default +name of the generator (``__name__`` attribute) is now get from the function +instead of the code. Use ``gen.gi_code.co_name`` to get the name of the +code. +.. +.. bpo: 21669 +.. date: 8901 +.. nonce: DFDrBA +.. section: Core and Builtins +With the aid of heuristics in SyntaxError.__init__, the parser now attempts +to generate more meaningful (or at least more search engine friendly) error +messages when "exec" and "print" are used as statements. +.. +.. bpo: 21642 +.. date: 8900 +.. nonce: -lWoKz +.. section: Core and Builtins +In the conditional if-else expression, allow an integer written with no +space between itself and the ``else`` keyword (e.g. ``True if 42else +False``) to be valid syntax. +.. +.. bpo: 21523 +.. date: 8899 +.. nonce: f_PPYO +.. section: Core and Builtins +Fix over-pessimistic computation of the stack effect of some opcodes in the +compiler. This also fixes a quadratic compilation time issue noticeable +when compiling code with a large number of "and" and "or" operators. +.. +.. bpo: 21418 +.. date: 8898 +.. nonce: z9jp1_ +.. section: Core and Builtins +Fix a crash in the builtin function super() when called without argument and +without current frame (ex: embedded Python). +.. +.. bpo: 21425 +.. date: 8897 +.. nonce: i3Teb8 +.. section: Core and Builtins +Fix flushing of standard streams in the interactive interpreter. +.. +.. bpo: 21435 +.. date: 8896 +.. nonce: ZojVOT +.. section: Core and Builtins +In rare cases, when running finalizers on objects in cyclic trash a bad +pointer dereference could occur due to a subtle flaw in internal iteration +logic. +.. +.. bpo: 21377 +.. date: 8895 +.. nonce: OawYfl +.. section: Core and Builtins +PyBytes_Concat() now tries to concatenate in-place when the first argument +has a reference count of 1. Patch by Nikolaus Rath. +.. +.. bpo: 20355 +.. date: 8894 +.. nonce: OrCNkZ +.. section: Core and Builtins +-W command line options now have higher priority than the PYTHONWARNINGS +environment variable. Patch by Arfrever. +.. +.. bpo: 21274 +.. date: 8893 +.. nonce: fVGfwq +.. section: Core and Builtins +Define PATH_MAX for GNU/Hurd in Python/pythonrun.c. +.. +.. bpo: 20904 +.. date: 8892 +.. nonce: fAGdj2 +.. section: Core and Builtins +Support setting FPU precision on m68k. +.. +.. bpo: 21209 +.. date: 8891 +.. nonce: nMljFr +.. section: Core and Builtins +Fix sending tuples to custom generator objects with the yield from syntax. +.. +.. bpo: 21193 +.. date: 8890 +.. nonce: Dg98Oo +.. section: Core and Builtins +pow(a, b, c) now raises ValueError rather than TypeError when b is negative. +Patch by Josh Rosenberg. +.. +.. bpo: 21176 +.. date: 8889 +.. nonce: mitDhW +.. section: Core and Builtins +PEP 465: Add the '@' operator for matrix multiplication. +.. +.. bpo: 21134 +.. date: 8888 +.. nonce: ZL4SKo +.. section: Core and Builtins +Fix segfault when str is called on an uninitialized UnicodeEncodeError, +UnicodeDecodeError, or UnicodeTranslateError object. +.. +.. bpo: 19537 +.. date: 8887 +.. nonce: AkuC_J +.. section: Core and Builtins +Fix PyUnicode_DATA() alignment under m68k. Patch by Andreas Schwab. +.. +.. bpo: 20929 +.. date: 8886 +.. nonce: 9NlUR7 +.. section: Core and Builtins +Add a type cast to avoid shifting a negative number. +.. +.. bpo: 20731 +.. date: 8885 +.. nonce: _03SZg +.. section: Core and Builtins +Properly position in source code files even if they are opened in text mode. +Patch by Serhiy Storchaka. +.. +.. bpo: 20637 +.. date: 8884 +.. nonce: ppYU0o +.. section: Core and Builtins +Key-sharing now also works for instance dictionaries of subclasses. Patch +by Peter Ingebretson. +.. +.. bpo: 8297 +.. date: 8883 +.. nonce: _XdGON +.. section: Core and Builtins +Attributes missing from modules now include the module name in the error +text. Original patch by ysj.ray. +.. +.. bpo: 19995 +.. date: 8882 +.. nonce: mnHEzX +.. section: Core and Builtins +%c, %o, %x, and %X now raise TypeError on non-integer input. +.. +.. bpo: 19655 +.. date: 8881 +.. nonce: JgVdes +.. section: Core and Builtins +The ASDL parser - used by the build process to generate code for managing +the Python AST in C - was rewritten. The new parser is self contained and +does not require to carry long the spark.py parser-generator library; +spark.py was removed from the source base. +.. +.. bpo: 12546 +.. date: 8880 +.. nonce: 09naZ9 +.. section: Core and Builtins +Allow ``\x00`` to be used as a fill character when using str, int, float, +and complex __format__ methods. +.. +.. bpo: 20480 +.. date: 8879 +.. nonce: TIYPLo +.. section: Core and Builtins +Add ipaddress.reverse_pointer. Patch by Leon Weber. +.. +.. bpo: 13598 +.. date: 8878 +.. nonce: GJelrw +.. section: Core and Builtins +Modify string.Formatter to support auto-numbering of replacement fields. It +now matches the behavior of str.format() in this regard. Patches by Phil +Elson and Ramchandra Apte. +.. +.. bpo: 8931 +.. date: 8877 +.. nonce: M05x4f +.. section: Core and Builtins +Make alternate formatting ('#') for type 'c' raise an exception. In versions +prior to 3.5, '#' with 'c' had no effect. Now specifying it is an error. +Patch by Torsten Landschoff. +.. +.. bpo: 23165 +.. date: 8876 +.. nonce: lk8uCE +.. section: Core and Builtins +Perform overflow checks before allocating memory in the _Py_char2wchar +function. +.. +.. bpo: 23399 +.. date: 8875 +.. nonce: hXMYgA +.. section: Library +pyvenv creates relative symlinks where possible. +.. +.. bpo: 20289 +.. date: 8874 +.. nonce: nio1N- +.. section: Library +cgi.FieldStorage() now supports the context management protocol. +.. +.. bpo: 13128 +.. date: 8873 +.. nonce: vqEcsy +.. section: Library +Print response headers for CONNECT requests when debuglevel > 0. Patch by +Demian Brecht. +.. +.. bpo: 15381 +.. date: 8872 +.. nonce: Xv-wu8 +.. section: Library +Optimized io.BytesIO to make less allocations and copyings. +.. +.. bpo: 22818 +.. date: 8871 +.. nonce: NYdAc9 +.. section: Library +Splitting on a pattern that could match an empty string now raises a +warning. Patterns that can only match empty strings are now rejected. +.. +.. bpo: 23099 +.. date: 8870 +.. nonce: ZASrUo +.. section: Library +Closing io.BytesIO with exported buffer is rejected now to prevent +corrupting exported buffer. +.. +.. bpo: 23326 +.. date: 8869 +.. nonce: 8VzlZD +.. section: Library +Removed __ne__ implementations. Since fixing default __ne__ implementation +in issue #21408 they are redundant. +.. +.. bpo: 23363 +.. date: 8868 +.. nonce: -koaol +.. section: Library +Fix possible overflow in itertools.permutations. +.. +.. bpo: 23364 +.. date: 8867 +.. nonce: 3yBV-6 +.. section: Library +Fix possible overflow in itertools.product. +.. +.. bpo: 23366 +.. date: 8866 +.. nonce: tyAfm8 +.. section: Library +Fixed possible integer overflow in itertools.combinations. +.. +.. bpo: 23369 +.. date: 8865 +.. nonce: nqChyE +.. section: Library +Fixed possible integer overflow in _json.encode_basestring_ascii. +.. +.. bpo: 23353 +.. date: 8864 +.. nonce: Iytkpc +.. section: Library +Fix the exception handling of generators in PyEval_EvalFrameEx(). At entry, +save or swap the exception state even if PyEval_EvalFrameEx() is called with +throwflag=0. At exit, the exception state is now always restored or swapped, +not only if why is WHY_YIELD or WHY_RETURN. Patch co-written with Antoine +Pitrou. +.. +.. bpo: 14099 +.. date: 8863 +.. nonce: t9-HVE +.. section: Library +Restored support of writing ZIP files to tellable but non-seekable streams. +.. +.. bpo: 14099 +.. date: 8862 +.. nonce: Myxxww +.. section: Library +Writing to ZipFile and reading multiple ZipExtFiles is threadsafe now. +.. +.. bpo: 19361 +.. date: 8861 +.. nonce: 2mvrV3 +.. section: Library +JSON decoder now raises JSONDecodeError instead of ValueError. +.. +.. bpo: 18518 +.. date: 8860 +.. nonce: JXgicC +.. section: Library +timeit now rejects statements which can't be compiled outside a function or +a loop (e.g. "return" or "break"). +.. +.. bpo: 23094 +.. date: 8859 +.. nonce: -8AXSi +.. section: Library +Fixed readline with frames in Python implementation of pickle. +.. +.. bpo: 23268 +.. date: 8858 +.. nonce: ATtRa5 +.. section: Library +Fixed bugs in the comparison of ipaddress classes. +.. +.. bpo: 21408 +.. date: 8857 +.. nonce: 0rI6tx +.. section: Library +Removed incorrect implementations of __ne__() which didn't returned +NotImplemented if __eq__() returned NotImplemented. The default __ne__() +now works correctly. +.. +.. bpo: 19996 +.. date: 8856 +.. nonce: 2-SiMf +.. section: Library +:class:`email.feedparser.FeedParser` now handles (malformed) headers with no +key rather than assuming the body has started. +.. +.. bpo: 20188 +.. date: 8855 +.. nonce: xocY-2 +.. section: Library +Support Application-Layer Protocol Negotiation (ALPN) in the ssl module. +.. +.. bpo: 23133 +.. date: 8854 +.. nonce: 8p2Wnl +.. section: Library +Pickling of ipaddress objects now produces more compact and portable +representation. +.. +.. bpo: 23248 +.. date: 8853 +.. nonce: FjcyCP +.. section: Library +Update ssl error codes from latest OpenSSL git master. +.. +.. bpo: 23266 +.. date: 8852 +.. nonce: Mo7alR +.. section: Library +Much faster implementation of ipaddress.collapse_addresses() when there are +many non-consecutive addresses. +.. +.. bpo: 23098 +.. date: 8851 +.. nonce: 7VwF3K +.. section: Library +64-bit dev_t is now supported in the os module. +.. +.. bpo: 21817 +.. date: 8850 +.. nonce: xYUW-9 +.. section: Library +When an exception is raised in a task submitted to a ProcessPoolExecutor, +the remote traceback is now displayed in the parent process. Patch by +Claudiu Popa. +.. +.. bpo: 15955 +.. date: 8849 +.. nonce: uvpBL4 +.. section: Library +Add an option to limit output size when decompressing LZMA data. Patch by +Nikolaus Rath and Martin Panter. +.. +.. bpo: 23250 +.. date: 8848 +.. nonce: qNGAUf +.. section: Library +In the http.cookies module, capitalize "HttpOnly" and "Secure" as they are +written in the standard. +.. +.. bpo: 23063 +.. date: 8847 +.. nonce: 9-UJRs +.. section: Library +In the distutils' check command, fix parsing of reST with code or code-block +directives. +.. +.. bpo: 23209 +.. date: 8846 +.. nonce: I0bCCH +.. section: Library +selectors.BaseSelector.get_key() now raises a RuntimeError if the selector +is closed. And selectors.BaseSelector.close() now clears its internal +reference to the selector mapping to break a reference cycle. Initial patch +written by Martin Richard. (See also: bpo-23225) +.. +.. bpo: 17911 +.. date: 8845 +.. nonce: yg65Iu +.. section: Library +Provide a way to seed the linecache for a PEP-302 module without actually +loading the code. +.. +.. bpo: 17911 +.. date: 8844 +.. nonce: qeTePa +.. section: Library +Provide a new object API for traceback, including the ability to not lookup +lines at all until the traceback is actually rendered, without any trace of +the original objects being kept alive. +.. +.. bpo: 19777 +.. date: 8843 +.. nonce: H_NDIA +.. section: Library +Provide a home() classmethod on Path objects. Contributed by Victor Salgado +and Mayank Tripathi. +.. +.. bpo: 23206 +.. date: 8842 +.. nonce: xSiYwq +.. section: Library +Make ``json.dumps(..., ensure_ascii=False)`` as fast as the default case of +``ensure_ascii=True``. Patch by Naoki Inada. +.. +.. bpo: 23185 +.. date: 8841 +.. nonce: KHyoSO +.. section: Library +Add math.inf and math.nan constants. +.. +.. bpo: 23186 +.. date: 8840 +.. nonce: KzWLP2 +.. section: Library +Add ssl.SSLObject.shared_ciphers() and ssl.SSLSocket.shared_ciphers() to +fetch the client's list ciphers sent at handshake. +.. +.. bpo: 23143 +.. date: 8839 +.. nonce: AWxJXV +.. section: Library +Remove compatibility with OpenSSLs older than 0.9.8. +.. +.. bpo: 23132 +.. date: 8838 +.. nonce: pbQcut +.. section: Library +Improve performance and introspection support of comparison methods created +by functool.total_ordering. +.. +.. bpo: 19776 +.. date: 8837 +.. nonce: BxNgxd +.. section: Library +Add an expanduser() method on Path objects. +.. +.. bpo: 23112 +.. date: 8836 +.. nonce: dZGf82 +.. section: Library +Fix SimpleHTTPServer to correctly carry the query string and fragment when +it redirects to add a trailing slash. +.. +.. bpo: 21793 +.. date: 8835 +.. nonce: T1kQBL +.. section: Library +Added http.HTTPStatus enums (i.e. HTTPStatus.OK, HTTPStatus.NOT_FOUND). +Patch by Demian Brecht. +.. +.. bpo: 23093 +.. date: 8834 +.. nonce: cP7OqD +.. section: Library +In the io, module allow more operations to work on detached streams. +.. +.. bpo: 23111 +.. date: 8833 +.. nonce: A34IA4 +.. section: Library +In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol version. +.. +.. bpo: 22585 +.. date: 8832 +.. nonce: F4BkNo +.. section: Library +On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), instead of +reading /dev/urandom, to get pseudo-random bytes. +.. +.. bpo: 19104 +.. date: 8831 +.. nonce: _eIThy +.. section: Library +pprint now produces evaluable output for wrapped strings. +.. +.. bpo: 23071 +.. date: 8830 +.. nonce: 3BSqF7 +.. section: Library +Added missing names to codecs.__all__. Patch by Martin Panter. +.. +.. bpo: 22783 +.. date: 8829 +.. nonce: OfYxBd +.. section: Library +Pickling now uses the NEWOBJ opcode instead of the NEWOBJ_EX opcode if +possible. +.. +.. bpo: 15513 +.. date: 8828 +.. nonce: 7yVnRE +.. section: Library +Added a __sizeof__ implementation for pickle classes. +.. +.. bpo: 19858 +.. date: 8827 +.. nonce: cqOlIt +.. section: Library +pickletools.optimize() now aware of the MEMOIZE opcode, can produce more +compact result and no longer produces invalid output if input data contains +MEMOIZE opcodes together with PUT or BINPUT opcodes. +.. +.. bpo: 22095 +.. date: 8826 +.. nonce: iISzxM +.. section: Library +Fixed HTTPConnection.set_tunnel with default port. The port value in the +host header was set to "None". Patch by Demian Brecht. +.. +.. bpo: 23016 +.. date: 8825 +.. nonce: LyrPd_ +.. section: Library +A warning no longer produces an AttributeError when the program is run with +pythonw.exe. +.. +.. bpo: 21775 +.. date: 8824 +.. nonce: ELR_Al +.. section: Library +shutil.copytree(): fix crash when copying to VFAT. An exception handler +assumed that OSError objects always have a 'winerror' attribute. That is not +the case, so the exception handler itself raised AttributeError when run on +Linux (and, presumably, any other non-Windows OS). Patch by Greg Ward. +.. +.. bpo: 1218234 +.. date: 8823 +.. nonce: 4GcoQK +.. section: Library +Fix inspect.getsource() to load updated source of reloaded module. Initial +patch by Berker Peksag. +.. +.. bpo: 21740 +.. date: 8822 +.. nonce: TtAApO +.. section: Library +Support wrapped callables in doctest. Patch by Claudiu Popa. +.. +.. bpo: 23009 +.. date: 8821 +.. nonce: -sW7gk +.. section: Library +Make sure selectors.EpollSelector.select() works when no FD is registered. +.. +.. bpo: 22959 +.. date: 8820 +.. nonce: Vxt3EP +.. section: Library +In the constructor of http.client.HTTPSConnection, prefer the context's +check_hostname attribute over the *check_hostname* parameter. +.. +.. bpo: 22696 +.. date: 8819 +.. nonce: pvdcxs +.. section: Library +Add function :func:`sys.is_finalizing` to know about interpreter shutdown. +.. +.. bpo: 16043 +.. date: 8818 +.. nonce: TGIC7t +.. section: Library +Add a default limit for the amount of data xmlrpclib.gzip_decode will +return. This resolves :cve:`2013-1753`. +.. +.. bpo: 14099 +.. date: 8817 +.. nonce: GJ5meQ +.. section: Library +ZipFile.open() no longer reopen the underlying file. Objects returned by +ZipFile.open() can now operate independently of the ZipFile even if the +ZipFile was created by passing in a file-like object as the first argument +to the constructor. +.. +.. bpo: 22966 +.. date: 8816 +.. nonce: zIxDrT +.. section: Library +Fix __pycache__ pyc file name clobber when pyc_compile is asked to compile a +source file containing multiple dots in the source file name. +.. +.. bpo: 21971 +.. date: 8815 +.. nonce: XlTc22 +.. section: Library +Update turtledemo doc and add module to the index. +.. +.. bpo: 21032 +.. date: 8814 +.. nonce: wxT_41 +.. section: Library +Fixed socket leak if HTTPConnection.getresponse() fails. Original patch by +Martin Panter. +.. +.. bpo: 22407 +.. date: 8813 +.. nonce: CWi1wX +.. section: Library +Deprecated the use of re.LOCALE flag with str patterns or re.ASCII. It was +newer worked. +.. +.. bpo: 22902 +.. date: 8812 +.. nonce: ZqXriA +.. section: Library +The "ip" command is now used on Linux to determine MAC address in +uuid.getnode(). Patch by Bruno Cauet. +.. +.. bpo: 22960 +.. date: 8811 +.. nonce: 2VDILT +.. section: Library +Add a context argument to xmlrpclib.ServerProxy constructor. +.. +.. bpo: 22389 +.. date: 8810 +.. nonce: 82DuwD +.. section: Library +Add contextlib.redirect_stderr(). +.. +.. bpo: 21356 +.. date: 8809 +.. nonce: 8NY75J +.. section: Library +Make ssl.RAND_egd() optional to support LibreSSL. The availability of the +function is checked during the compilation. Patch written by Bernard Spil. +.. +.. bpo: 22915 +.. date: 8808 +.. nonce: 709UAo +.. section: Library +SAX parser now supports files opened with file descriptor or bytes path. +.. +.. bpo: 22609 +.. date: 8807 +.. nonce: mmLoeb +.. section: Library +Constructors and update methods of mapping classes in the collections module +now accept the self keyword argument. +.. +.. bpo: 22940 +.. date: 8806 +.. nonce: SP99Nf +.. section: Library +Add readline.append_history_file. +.. +.. bpo: 19676 +.. date: 8805 +.. nonce: Wijwr8 +.. section: Library +Added the "namereplace" error handler. +.. +.. bpo: 22788 +.. date: 8804 +.. nonce: vofL9e +.. section: Library +Add *context* parameter to logging.handlers.HTTPHandler. +.. +.. bpo: 22921 +.. date: 8803 +.. nonce: a4wx1C +.. section: Library +Allow SSLContext to take the *hostname* parameter even if OpenSSL doesn't +support SNI. +.. +.. bpo: 22894 +.. date: 8802 +.. nonce: 4AkwPA +.. section: Library +TestCase.subTest() would cause the test suite to be stopped when in failfast +mode, even in the absence of failures. +.. +.. bpo: 22796 +.. date: 8801 +.. nonce: _pFPFA +.. section: Library +HTTP cookie parsing is now stricter, in order to protect against potential +injection attacks. +.. +.. bpo: 22370 +.. date: 8800 +.. nonce: j4y21u +.. section: Library +Windows detection in pathlib is now more robust. +.. +.. bpo: 22841 +.. date: 8799 +.. nonce: 8wpk7T +.. section: Library +Reject coroutines in asyncio add_signal_handler(). Patch by Ludovic.Gasc. +.. +.. bpo: 19494 +.. date: 8798 +.. nonce: 7O5O8k +.. section: Library +Added urllib.request.HTTPBasicPriorAuthHandler. Patch by Matej Cepl. +.. +.. bpo: 22578 +.. date: 8797 +.. nonce: 6XZ0Jf +.. section: Library +Added attributes to the re.error class. +.. +.. bpo: 22849 +.. date: 8796 +.. nonce: AqBPyj +.. section: Library +Fix possible double free in the io.TextIOWrapper constructor. +.. +.. bpo: 12728 +.. date: 8795 +.. nonce: rHZmXO +.. section: Library +Different Unicode characters having the same uppercase but different +lowercase are now matched in case-insensitive regular expressions. +.. +.. bpo: 22821 +.. date: 8794 +.. nonce: 30cQ-U +.. section: Library +Fixed fcntl() with integer argument on 64-bit big-endian platforms. +.. +.. bpo: 21650 +.. date: 8793 +.. nonce: 62MLqr +.. section: Library +Add an ``--sort-keys`` option to ``json.tool`` CLI. +.. +.. bpo: 22824 +.. date: 8792 +.. nonce: d5Txvr +.. section: Library +Updated reprlib output format for sets to use set literals. Patch +contributed by Berker Peksag. +.. +.. bpo: 22824 +.. date: 8791 +.. nonce: H_r9uH +.. section: Library +Updated reprlib output format for arrays to display empty arrays without an +unnecessary empty list. Suggested by Serhiy Storchaka. +.. +.. bpo: 22406 +.. date: 8790 +.. nonce: sPlVbI +.. section: Library +Fixed the uu_codec codec incorrectly ported to 3.x. Based on patch by Martin +Panter. +.. +.. bpo: 17293 +.. date: 8789 +.. nonce: Hk06bO +.. section: Library +uuid.getnode() now determines MAC address on AIX using netstat. Based on +patch by Aivars Kalvāns. +.. +.. bpo: 22769 +.. date: 8788 +.. nonce: PunnvQ +.. section: Library +Fixed ttk.Treeview.tag_has() when called without arguments. +.. +.. bpo: 22417 +.. date: 8787 +.. nonce: To4b7U +.. section: Library +Verify certificates by default in httplib (PEP 476). +.. +.. bpo: 22775 +.. date: 8786 +.. nonce: V5aCUz +.. section: Library +Fixed unpickling of http.cookies.SimpleCookie with protocol 2 and above. +Patch by Tim Graham. +.. +.. bpo: 22776 +.. date: 8785 +.. nonce: xNcRse +.. section: Library +Brought excluded code into the scope of a try block in SysLogHandler.emit(). +.. +.. bpo: 22665 +.. date: 8784 +.. nonce: j6Jlp8 +.. section: Library +Add missing get_terminal_size and SameFileError to shutil.__all__. +.. +.. bpo: 6623 +.. date: 8783 +.. nonce: 6LOidS +.. section: Library +Remove deprecated Netrc class in the ftplib module. Patch by Matt Chaput. +.. +.. bpo: 17381 +.. date: 8782 +.. nonce: 4J5yv7 +.. section: Library +Fixed handling of case-insensitive ranges in regular expressions. +.. +.. bpo: 22410 +.. date: 8781 +.. nonce: 99YFdd +.. section: Library +Module level functions in the re module now cache compiled locale-dependent +regular expressions taking into account the locale. +.. +.. bpo: 22759 +.. date: 8780 +.. nonce: BJPdiL +.. section: Library +Query methods on pathlib.Path() (exists(), is_dir(), etc.) now return False +when the underlying stat call raises NotADirectoryError. +.. +.. bpo: 8876 +.. date: 8779 +.. nonce: A83Av4 +.. section: Library +distutils now falls back to copying files when hard linking doesn't work. +This allows use with special filesystems such as VirtualBox shared folders. +.. +.. bpo: 22217 +.. date: 8778 +.. nonce: nXzGur +.. section: Library +Implemented reprs of classes in the zipfile module. +.. +.. bpo: 22457 +.. date: 8777 +.. nonce: Xd2Mk- +.. section: Library +Honour load_tests in the start_dir of discovery. +.. +.. bpo: 18216 +.. date: 8776 +.. nonce: trTZw4 +.. section: Library +gettext now raises an error when a .mo file has an unsupported major version +number. Patch by Aaron Hill. +.. +.. bpo: 13918 +.. date: 8775 +.. nonce: -OnUhD +.. section: Library +Provide a locale.delocalize() function which can remove locale-specific +number formatting from a string representing a number, without then +converting it to a specific type. Patch by Cédric Krier. +.. +.. bpo: 22676 +.. date: 8774 +.. nonce: d2v8QM +.. section: Library +Make the pickling of global objects which don't have a __module__ attribute +less slow. +.. +.. bpo: 18853 +.. date: 8773 +.. nonce: 76DrPD +.. section: Library +Fixed ResourceWarning in shlex.__nain__. +.. +.. bpo: 9351 +.. date: 8772 +.. nonce: u5UI-6 +.. section: Library +Defaults set with set_defaults on an argparse subparser are no longer +ignored when also set on the parent parser. +.. +.. bpo: 7559 +.. date: 8771 +.. nonce: QG35ZP +.. section: Library +unittest test loading ImportErrors are reported as import errors with their +import exception rather than as attribute errors after the import has +already failed. +.. +.. bpo: 19746 +.. date: 8770 +.. nonce: S1dg1K +.. section: Library +Make it possible to examine the errors from unittest discovery without +executing the test suite. The new ``errors`` attribute on ``TestLoader`` exposes +these non-fatal errors encountered during discovery. +.. +.. bpo: 21991 +.. date: 8769 +.. nonce: Mkm0IN +.. section: Library +Make email.headerregistry's header 'params' attributes be read-only +(MappingProxyType). Previously the dictionary was modifiable but a new one +was created on each access of the attribute. +.. +.. bpo: 22638 +.. date: 8768 +.. nonce: Ur73gJ +.. section: Library +SSLv3 is now disabled throughout the standard library. It can still be +enabled by instantiating a SSLContext manually. +.. +.. bpo: 22641 +.. date: 8767 +.. nonce: m0ldtl +.. section: Library +In asyncio, the default SSL context for client connections is now created +using ssl.create_default_context(), for stronger security. +.. +.. bpo: 17401 +.. date: 8766 +.. nonce: SZd19P +.. section: Library +Include closefd in io.FileIO repr. +.. +.. bpo: 21338 +.. date: 8765 +.. nonce: evDyHD +.. section: Library +Add silent mode for compileall. quiet parameters of compile_{dir, file, +path} functions now have a multilevel value. Also, -q option of the CLI now +have a multilevel value. Patch by Thomas Kluyver. +.. +.. bpo: 20152 +.. date: 8764 +.. nonce: 9_o92A +.. section: Library +Convert the array and cmath modules to Argument Clinic. +.. +.. bpo: 18643 +.. date: 8763 +.. nonce: 6Qdc0J +.. section: Library +Add socket.socketpair() on Windows. +.. +.. bpo: 22435 +.. date: 8762 +.. nonce: s2U7Zm +.. section: Library +Fix a file descriptor leak when socketserver bind fails. +.. +.. bpo: 13096 +.. date: 8761 +.. nonce: rsailB +.. section: Library +Fixed segfault in CTypes POINTER handling of large values. +.. +.. bpo: 11694 +.. date: 8760 +.. nonce: JuDrch +.. section: Library +Raise ConversionError in xdrlib as documented. Patch by Filip Gruszczyński +and Claudiu Popa. +.. +.. bpo: 19380 +.. date: 8759 +.. nonce: nqgoRQ +.. section: Library +Optimized parsing of regular expressions. +.. +.. bpo: 1519638 +.. date: 8758 +.. nonce: 2pbuog +.. section: Library +Now unmatched groups are replaced with empty strings in re.sub() and +re.subn(). +.. +.. bpo: 18615 +.. date: 8757 +.. nonce: 65TxnY +.. section: Library +sndhdr.what/whathdr now return a namedtuple. +.. +.. bpo: 22462 +.. date: 8756 +.. nonce: 1h4Kpr +.. section: Library +Fix pyexpat's creation of a dummy frame to make it appear in exception +tracebacks. +.. +.. bpo: 21965 +.. date: 8755 +.. nonce: n_jnXs +.. section: Library +Add support for in-memory SSL to the ssl module. Patch by Geert Jansen. +.. +.. bpo: 21173 +.. date: 8754 +.. nonce: egkbEx +.. section: Library +Fix len() on a WeakKeyDictionary when .clear() was called with an iterator +alive. +.. +.. bpo: 11866 +.. date: 8753 +.. nonce: xrvbIC +.. section: Library +Eliminated race condition in the computation of names for new threads. +.. +.. bpo: 21905 +.. date: 8752 +.. nonce: coKyRo +.. section: Library +Avoid RuntimeError in pickle.whichmodule() when sys.modules is mutated while +iterating. Patch by Olivier Grisel. +.. +.. bpo: 11271 +.. date: 8751 +.. nonce: ZYiJru +.. section: Library +concurrent.futures.Executor.map() now takes a *chunksize* argument to allow +batching of tasks in child processes and improve performance of +ProcessPoolExecutor. Patch by Dan O'Reilly. +.. +.. bpo: 21883 +.. date: 8750 +.. nonce: qpuQu6 +.. section: Library +os.path.join() and os.path.relpath() now raise a TypeError with more helpful +error message for unsupported or mismatched types of arguments. +.. +.. bpo: 22219 +.. date: 8749 +.. nonce: l9Enh9 +.. section: Library +The zipfile module CLI now adds entries for directories (including empty +directories) in ZIP file. +.. +.. bpo: 22449 +.. date: 8748 +.. nonce: nFW_Fl +.. section: Library +In the ssl.SSLContext.load_default_certs, consult the environmental +variables SSL_CERT_DIR and SSL_CERT_FILE on Windows. +.. +.. bpo: 22508 +.. date: 8747 +.. nonce: 2LbnGQ +.. section: Library +The email.__version__ variable has been removed; the email code is no longer +shipped separately from the stdlib, and __version__ hasn't been updated in +several releases. +.. +.. bpo: 20076 +.. date: 8746 +.. nonce: -7OIVB +.. section: Library +Added non derived UTF-8 aliases to locale aliases table. +.. +.. bpo: 20079 +.. date: 8745 +.. nonce: qM949O +.. section: Library +Added locales supported in glibc 2.18 to locale alias table. +.. +.. bpo: 20218 +.. date: 8744 +.. nonce: CMgOyE +.. section: Library +Added convenience methods read_text/write_text and read_bytes/ write_bytes +to pathlib.Path objects. +.. +.. bpo: 22396 +.. date: 8743 +.. nonce: cQSizA +.. section: Library +On 32-bit AIX platform, don't expose os.posix_fadvise() nor +os.posix_fallocate() because their prototypes in system headers are wrong. +.. +.. bpo: 22517 +.. date: 8742 +.. nonce: qT6-aB +.. section: Library +When an io.BufferedRWPair object is deallocated, clear its weakrefs. +.. +.. bpo: 22437 +.. date: 8741 +.. nonce: MRVnmQ +.. section: Library +Number of capturing groups in regular expression is no longer limited by +100. +.. +.. bpo: 17442 +.. date: 8740 +.. nonce: rnc87D +.. section: Library +InteractiveInterpreter now displays the full chained traceback in its +showtraceback method, to match the built in interactive interpreter. +.. +.. bpo: 23392 +.. date: 8739 +.. nonce: Pe7_WK +.. section: Library +Added tests for marshal C API that works with FILE*. +.. +.. bpo: 10510 +.. date: 8738 +.. nonce: N-ntcD +.. section: Library +distutils register and upload methods now use HTML standards compliant CRLF +line endings. +.. +.. bpo: 9850 +.. date: 8737 +.. nonce: D-UnVi +.. section: Library +Fixed macpath.join() for empty first component. Patch by Oleg Oshmyan. +.. +.. bpo: 5309 +.. date: 8736 +.. nonce: pVMmQ8 +.. section: Library +distutils' build and build_ext commands now accept a ``-j`` option to enable +parallel building of extension modules. +.. +.. bpo: 22448 +.. date: 8735 +.. nonce: fAapvE +.. section: Library +Improve canceled timer handles cleanup to prevent unbound memory usage. +Patch by Joshua Moore-Oliva. +.. +.. bpo: 22427 +.. date: 8734 +.. nonce: TZ5S_u +.. section: Library +TemporaryDirectory no longer attempts to clean up twice when used in the +with statement in generator. +.. +.. bpo: 22362 +.. date: 8733 +.. nonce: xIBThN +.. section: Library +Forbidden ambiguous octal escapes out of range 0-0o377 in regular +expressions. +.. +.. bpo: 20912 +.. date: 8732 +.. nonce: cAq3mZ +.. section: Library +Now directories added to ZIP file have correct Unix and MS-DOS directory +attributes. +.. +.. bpo: 21866 +.. date: 8731 +.. nonce: hSc4wM +.. section: Library +ZipFile.close() no longer writes ZIP64 central directory records if +allowZip64 is false. +.. +.. bpo: 22278 +.. date: 8730 +.. nonce: abqBXZ +.. section: Library +Fix urljoin problem with relative urls, a regression observed after changes +to issue22118 were submitted. +.. +.. bpo: 22415 +.. date: 8729 +.. nonce: xJLAvI +.. section: Library +Fixed debugging output of the GROUPREF_EXISTS opcode in the re module. +Removed trailing spaces in debugging output. +.. +.. bpo: 22423 +.. date: 8728 +.. nonce: Rtb4oT +.. section: Library +Unhandled exception in thread no longer causes unhandled AttributeError when +sys.stderr is None. +.. +.. bpo: 21332 +.. date: 8727 +.. nonce: Gwxwlr +.. section: Library +Ensure that ``bufsize=1`` in subprocess.Popen() selects line buffering, +rather than block buffering. Patch by Akira Li. +.. +.. bpo: 21091 +.. date: 8726 +.. nonce: M5hAtT +.. section: Library +Fix API bug: email.message.EmailMessage.is_attachment is now a method. +.. +.. bpo: 21079 +.. date: 8725 +.. nonce: czVcL8 +.. section: Library +Fix email.message.EmailMessage.is_attachment to return the correct result +when the header has parameters as well as a value. +.. +.. bpo: 22247 +.. date: 8724 +.. nonce: sGIpR3 +.. section: Library +Add NNTPError to nntplib.__all__. +.. +.. bpo: 22366 +.. date: 8723 +.. nonce: Dd1eFj +.. section: Library +urllib.request.urlopen will accept a context object (SSLContext) as an +argument which will then be used for HTTPS connection. Patch by Alex Gaynor. +.. +.. bpo: 4180 +.. date: 8722 +.. nonce: QBx0JK +.. section: Library +The warnings registries are now reset when the filters are modified. +.. +.. bpo: 22419 +.. date: 8721 +.. nonce: FqH4aC +.. section: Library +Limit the length of incoming HTTP request in wsgiref server to 65536 bytes +and send a 414 error code for higher lengths. Patch contributed by Devin +Cook. +.. +.. bpo: 0 +.. date: 8720 +.. nonce: y7r3O2 +.. section: Library +Lax cookie parsing in http.cookies could be a security issue when combined +with non-standard cookie handling in some web browsers. Reported by Sergey +Bobrov. +.. +.. bpo: 20537 +.. date: 8719 +.. nonce: E0CE54 +.. section: Library +logging methods now accept an exception instance as well as a Boolean value +or exception tuple. Thanks to Yury Selivanov for the patch. +.. +.. bpo: 22384 +.. date: 8718 +.. nonce: -Nl4He +.. section: Library +An exception in Tkinter callback no longer crashes the program when it is +run with pythonw.exe. +.. +.. bpo: 22168 +.. date: 8717 +.. nonce: vLeKWC +.. section: Library +Prevent turtle AttributeError with non-default Canvas on OS X. +.. +.. bpo: 21147 +.. date: 8716 +.. nonce: w9DE17 +.. section: Library +sqlite3 now raises an exception if the request contains a null character +instead of truncating it. Based on patch by Victor Stinner. +.. +.. bpo: 13968 +.. date: 8715 +.. nonce: 1okGqm +.. section: Library +The glob module now supports recursive search in subdirectories using the +``**`` pattern. +.. +.. bpo: 21951 +.. date: 8714 +.. nonce: 3vS4LK +.. section: Library +Fixed a crash in Tkinter on AIX when called Tcl command with empty string or +tuple argument. +.. +.. bpo: 21951 +.. date: 8713 +.. nonce: _CCC4v +.. section: Library +Tkinter now most likely raises MemoryError instead of crash if the memory +allocation fails. +.. +.. bpo: 22338 +.. date: 8712 +.. nonce: rKlCMz +.. section: Library +Fix a crash in the json module on memory allocation failure. +.. +.. bpo: 12410 +.. date: 8711 +.. nonce: oFf-cB +.. section: Library +imaplib.IMAP4 now supports the context management protocol. Original patch +by Tarek Ziadé. +.. +.. bpo: 21270 +.. date: 8710 +.. nonce: qMBaY- +.. section: Library +We now override tuple methods in mock.call objects so that they can be used +as normal call attributes. +.. +.. bpo: 16662 +.. date: 8709 +.. nonce: Nghn-Y +.. section: Library +``load_tests()`` is now unconditionally run when it is present in a package's +``__init__.py``. ``TestLoader.loadTestsFromModule()`` still accepts use_load_tests, +but it is deprecated and ignored. A new keyword-only attribute ``pattern`` is +added and documented. Patch given by Robert Collins, tweaked by Barry +Warsaw. +.. +.. bpo: 22226 +.. date: 8708 +.. nonce: T1ZMPY +.. section: Library +First letter no longer is stripped from the "status" key in the result of +Treeview.heading(). +.. +.. bpo: 19524 +.. date: 8707 +.. nonce: EQJjlF +.. section: Library +Fixed resource leak in the HTTP connection when an invalid response is +received. Patch by Martin Panter. +.. +.. bpo: 20421 +.. date: 8706 +.. nonce: iR0S1s +.. section: Library +Add a .version() method to SSL sockets exposing the actual protocol version +in use. +.. +.. bpo: 19546 +.. date: 8705 +.. nonce: 8VdYBK +.. section: Library +configparser exceptions no longer expose implementation details. Chained +KeyErrors are removed, which leads to cleaner tracebacks. Patch by Claudiu +Popa. +.. +.. bpo: 22051 +.. date: 8704 +.. nonce: cUjFqL +.. section: Library +turtledemo no longer reloads examples to re-run them. Initialization of +variables and gui setup should be done in main(), which is called each time +a demo is run, but not on import. +.. +.. bpo: 21933 +.. date: 8703 +.. nonce: IhMjN1 +.. section: Library +Turtledemo users can change the code font size with a menu selection or +control(command) '-' or '+' or control-mousewheel. Original patch by Lita +Cho. +.. +.. bpo: 21597 +.. date: 8702 +.. nonce: aPTCWJ +.. section: Library +The separator between the turtledemo text pane and the drawing canvas can +now be grabbed and dragged with a mouse. The code text pane can be widened +to easily view or copy the full width of the text. The canvas can be +widened on small screens. Original patches by Jan Kanis and Lita Cho. +.. +.. bpo: 18132 +.. date: 8701 +.. nonce: 2R2nwM +.. section: Library +Turtledemo buttons no longer disappear when the window is shrunk. Original +patches by Jan Kanis and Lita Cho. +.. +.. bpo: 22043 +.. date: 8700 +.. nonce: Q6RvGL +.. section: Library +time.monotonic() is now always available. ``threading.Lock.acquire()``, +``threading.RLock.acquire()`` and socket operations now use a monotonic +clock, instead of the system clock, when a timeout is used. +.. +.. bpo: 21527 +.. date: 8699 +.. nonce: N5WPxr +.. section: Library +Add a default number of workers to ThreadPoolExecutor equal to 5 times the +number of CPUs. Patch by Claudiu Popa. +.. +.. bpo: 22216 +.. date: 8698 +.. nonce: Cmalu6 +.. section: Library +smtplib now resets its state more completely after a quit. The most obvious +consequence of the previous behavior was a STARTTLS failure during a +connect/starttls/quit/connect/starttls sequence. +.. +.. bpo: 22098 +.. date: 8697 +.. nonce: 5JYiQN +.. section: Library +ctypes' BigEndianStructure and LittleEndianStructure now define an empty +__slots__ so that subclasses don't always get an instance dict. Patch by +Claudiu Popa. +.. +.. bpo: 22185 +.. date: 8696 +.. nonce: 1SCCIK +.. section: Library +Fix an occasional RuntimeError in threading.Condition.wait() caused by +mutation of the waiters queue without holding the lock. Patch by Doug +Zongker. +.. +.. bpo: 22287 +.. date: 8695 +.. nonce: awH2AI +.. section: Library +On UNIX, _PyTime_gettimeofday() now uses clock_gettime(CLOCK_REALTIME) if +available. As a side effect, Python now depends on the librt library on +Solaris and on Linux (only with glibc older than 2.17). +.. +.. bpo: 22182 +.. date: 8694 +.. nonce: 5EG1Bc +.. section: Library +Use e.args to unpack exceptions correctly in distutils.file_util.move_file. +Patch by Claudiu Popa. +.. +.. bpo: 0 +.. date: 8693 +.. nonce: zBfe8J +.. section: Library +The webbrowser module now uses subprocess's start_new_session=True rather +than a potentially risky preexec_fn=os.setsid call. +.. +.. bpo: 22042 +.. date: 8692 +.. nonce: WZvb8s +.. section: Library +signal.set_wakeup_fd(fd) now raises an exception if the file descriptor is +in blocking mode. +.. +.. bpo: 16808 +.. date: 8691 +.. nonce: kPy_5U +.. section: Library +inspect.stack() now returns a named tuple instead of a tuple. Patch by +Daniel Shahaf. +.. +.. bpo: 22236 +.. date: 8690 +.. nonce: 1utXkg +.. section: Library +Fixed Tkinter images copying operations in NoDefaultRoot mode. +.. +.. bpo: 2527 +.. date: 8689 +.. nonce: fR2GS6 +.. section: Library +Add a *globals* argument to timeit functions, in order to override the +globals namespace in which the timed code is executed. Patch by Ben Roberts. +.. +.. bpo: 22118 +.. date: 8688 +.. nonce: 3gdkOF +.. section: Library +Switch urllib.parse to use RFC 3986 semantics for the resolution of relative +URLs, rather than RFCs 1808 and 2396. Patch by Demian Brecht. +.. +.. bpo: 21549 +.. date: 8687 +.. nonce: i1LVvg +.. section: Library +Added the "members" parameter to TarFile.list(). +.. +.. bpo: 19628 +.. date: 8686 +.. nonce: ssQVP8 +.. section: Library +Allow compileall recursion depth to be specified with a -r option. +.. +.. bpo: 15696 +.. date: 8685 +.. nonce: PTwXYJ +.. section: Library +Add a __sizeof__ implementation for mmap objects on Windows. +.. +.. bpo: 22068 +.. date: 8684 +.. nonce: wCdaW0 +.. section: Library +Avoided reference loops with Variables and Fonts in Tkinter. +.. +.. bpo: 22165 +.. date: 8683 +.. nonce: J1np4o +.. section: Library +SimpleHTTPRequestHandler now supports undecodable file names. +.. +.. bpo: 15381 +.. date: 8682 +.. nonce: Ia8pf6 +.. section: Library +Optimized line reading in io.BytesIO. +.. +.. bpo: 8797 +.. date: 8681 +.. nonce: aJcIPu +.. section: Library +Raise HTTPError on failed Basic Authentication immediately. Initial patch by +Sam Bull. +.. +.. bpo: 20729 +.. date: 8680 +.. nonce: I-1Lap +.. section: Library +Restored the use of lazy iterkeys()/itervalues()/iteritems() in the mailbox +module. +.. +.. bpo: 21448 +.. date: 8679 +.. nonce: THJSYB +.. section: Library +Changed FeedParser feed() to avoid *O*\ (*n*\ :sup:`2`) behavior when parsing long line. +Original patch by Raymond Hettinger. +.. +.. bpo: 22184 +.. date: 8678 +.. nonce: UCbSOt +.. section: Library +The functools LRU Cache decorator factory now gives an earlier and clearer +error message when the user forgets the required parameters. +.. +.. bpo: 17923 +.. date: 8677 +.. nonce: YI_QjG +.. section: Library +glob() patterns ending with a slash no longer match non-dirs on AIX. Based +on patch by Delhallt. +.. +.. bpo: 21725 +.. date: 8676 +.. nonce: eIu-2N +.. section: Library +Added support for RFC 6531 (SMTPUTF8) in smtpd. +.. +.. bpo: 22176 +.. date: 8675 +.. nonce: rgbRyg +.. section: Library +Update the ctypes module's libffi to v3.1. This release adds support for +the Linux AArch64 and POWERPC ELF ABIv2 little endian architectures. +.. +.. bpo: 5411 +.. date: 8674 +.. nonce: 5Utapn +.. section: Library +Added support for the "xztar" format in the shutil module. +.. +.. bpo: 21121 +.. date: 8673 +.. nonce: ZLsRil +.. section: Library +Don't force 3rd party C extensions to be built with +-Werror=declaration-after-statement. +.. +.. bpo: 21975 +.. date: 8672 +.. nonce: MI8ntO +.. section: Library +Fixed crash when using uninitialized sqlite3.Row (in particular when +unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the +__new__() method. +.. +.. bpo: 20170 +.. date: 8671 +.. nonce: 8QfhN7 +.. section: Library +Convert posixmodule to use Argument Clinic. +.. +.. bpo: 21539 +.. date: 8670 +.. nonce: YccmZF +.. section: Library +Add an *exists_ok* argument to ``Pathlib.mkdir()`` to mimic ``mkdir -p`` and +``os.makedirs()`` functionality. When true, ignore ``FileExistsErrors``. Patch +by Berker Peksag. +.. +.. bpo: 22127 +.. date: 8669 +.. nonce: 0l2OO5 +.. section: Library +Bypass IDNA for pure-ASCII host names in the socket module (in particular +for numeric IPs). +.. +.. bpo: 21047 +.. date: 8668 +.. nonce: XfUQG3 +.. section: Library +set the default value for the *convert_charrefs* argument of HTMLParser to +True. Patch by Berker Peksag. +.. +.. bpo: 0 +.. date: 8667 +.. nonce: 56bAnQ +.. section: Library +Add an __all__ to html.entities. +.. +.. bpo: 15114 +.. date: 8666 +.. nonce: jXwseC +.. section: Library +the strict mode and argument of HTMLParser, HTMLParser.error, and the +HTMLParserError exception have been removed. +.. +.. bpo: 22085 +.. date: 8665 +.. nonce: 3JM_Aw +.. section: Library +Dropped support of Tk 8.3 in Tkinter. +.. +.. bpo: 21580 +.. date: 8664 +.. nonce: 3ssycS +.. section: Library +Now Tkinter correctly handles bytes arguments passed to Tk. In particular +this allows initializing images from binary data. +.. +.. bpo: 22003 +.. date: 8663 +.. nonce: 4ZIDS1 +.. section: Library +When initialized from a bytes object, io.BytesIO() now defers making a copy +until it is mutated, improving performance and memory use on some use cases. +Patch by David Wilson. +.. +.. bpo: 22018 +.. date: 8662 +.. nonce: 6ApxSH +.. section: Library +On Windows, signal.set_wakeup_fd() now also supports sockets. A side effect +is that Python depends to the WinSock library. +.. +.. bpo: 22054 +.. date: 8661 +.. nonce: zp6Svw +.. section: Library +Add os.get_blocking() and os.set_blocking() functions to get and set the +blocking mode of a file descriptor (False if the O_NONBLOCK flag is set, +True otherwise). These functions are not available on Windows. +.. +.. bpo: 17172 +.. date: 8660 +.. nonce: R_LI_2 +.. section: Library +Make turtledemo start as active on OS X even when run with subprocess. +Patch by Lita Cho. +.. +.. bpo: 21704 +.. date: 8659 +.. nonce: gL3ikj +.. section: Library +Fix build error for _multiprocessing when semaphores are not available. +Patch by Arfrever Frehtes Taifersar Arahesis. +.. +.. bpo: 20173 +.. date: 8658 +.. nonce: FAL-4L +.. section: Library +Convert sha1, sha256, sha512 and md5 to ArgumentClinic. Patch by Vajrasky +Kok. +.. +.. bpo: 0 +.. date: 8657 +.. nonce: G25tq3 +.. section: Library +Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError on +closed socket. repr(socket.socket) already works fine. +.. +.. bpo: 22033 +.. date: 8656 +.. nonce: nkBNci +.. section: Library +Reprs of most Python implemented classes now contain actual class name +instead of hardcoded one. +.. +.. bpo: 21947 +.. date: 8655 +.. nonce: mlisu- +.. section: Library +The dis module can now disassemble generator-iterator objects based on their +gi_code attribute. Patch by Clement Rouault. +.. +.. bpo: 16133 +.. date: 8654 +.. nonce: tYuYQF +.. section: Library +The asynchat.async_chat.handle_read() method now ignores BlockingIOError +exceptions. +.. +.. bpo: 22044 +.. date: 8653 +.. nonce: t09GRU +.. section: Library +Fixed premature DECREF in call_tzinfo_method. Patch by Tom Flanagan. +.. +.. bpo: 19884 +.. date: 8652 +.. nonce: v73gSn +.. section: Library +readline: Disable the meta modifier key if stdout is not a terminal to not +write the ANSI sequence ``"\033[1034h"`` into stdout. This sequence is used +on some terminal (ex: TERM=xterm-256color") to enable support of 8 bit +characters. +.. +.. bpo: 4350 +.. date: 8651 +.. nonce: nrTzJn +.. section: Library +Removed a number of out-of-dated and non-working for a long time Tkinter +methods. +.. +.. bpo: 6167 +.. date: 8650 +.. nonce: n9dV_D +.. section: Library +Scrollbar.activate() now returns the name of active element if the argument +is not specified. Scrollbar.set() now always accepts only 2 arguments. +.. +.. bpo: 15275 +.. date: 8649 +.. nonce: jk0tTI +.. section: Library +Clean up and speed up the ntpath module. +.. +.. bpo: 21888 +.. date: 8648 +.. nonce: danlpz +.. section: Library +plistlib's load() and loads() now work if the fmt parameter is specified. +.. +.. bpo: 22032 +.. date: 8647 +.. nonce: UklzQW +.. section: Library +__qualname__ instead of __name__ is now always used to format fully +qualified class names of Python implemented classes. +.. +.. bpo: 22031 +.. date: 8646 +.. nonce: 9aazp1 +.. section: Library +Reprs now always use hexadecimal format with the "0x" prefix when contain an +id in form " at 0x...". +.. +.. bpo: 22018 +.. date: 8645 +.. nonce: b_JTHH +.. section: Library +signal.set_wakeup_fd() now raises an OSError instead of a ValueError on +``fstat()`` failure. +.. +.. bpo: 21044 +.. date: 8644 +.. nonce: 16xo9u +.. section: Library +tarfile.open() now handles fileobj with an integer 'name' attribute. Based +on patch by Antoine Pietri. +.. +.. bpo: 21966 +.. date: 8643 +.. nonce: hHD9MK +.. section: Library +Respect -q command-line option when code module is ran. +.. +.. bpo: 19076 +.. date: 8642 +.. nonce: xCoIai +.. section: Library +Don't pass the redundant 'file' argument to self.error(). +.. +.. bpo: 16382 +.. date: 8641 +.. nonce: -XBK7z +.. section: Library +Improve exception message of warnings.warn() for bad category. Initial patch +by Phil Elson. +.. +.. bpo: 21932 +.. date: 8640 +.. nonce: LK_5S1 +.. section: Library +os.read() now uses a :c:func:`Py_ssize_t` type instead of :c:expr:`int` for +the size to support reading more than 2 GB at once. On Windows, the size is +truncated to INT_MAX. As any call to os.read(), the OS may read less bytes +than the number of requested bytes. +.. +.. bpo: 21942 +.. date: 8639 +.. nonce: TLOS41 +.. section: Library +Fixed source file viewing in pydoc's server mode on Windows. +.. +.. bpo: 11259 +.. date: 8638 +.. nonce: GxfYnE +.. section: Library +asynchat.async_chat().set_terminator() now raises a ValueError if the number +of received bytes is negative. +.. +.. bpo: 12523 +.. date: 8637 +.. nonce: XBdAky +.. section: Library +asynchat.async_chat.push() now raises a TypeError if it doesn't get a bytes +string +.. +.. bpo: 21707 +.. date: 8636 +.. nonce: rrY_wd +.. section: Library +Add missing kwonlyargcount argument to ModuleFinder.replace_paths_in_code(). +.. +.. bpo: 20639 +.. date: 8635 +.. nonce: YdvOpp +.. section: Library +calling Path.with_suffix('') allows removing the suffix again. Patch by +July Tikhonov. +.. +.. bpo: 21714 +.. date: 8634 +.. nonce: HhkGXW +.. section: Library +Disallow the construction of invalid paths using Path.with_name(). Original +patch by Antony Lee. +.. +.. bpo: 15014 +.. date: 8633 +.. nonce: dB50zb +.. section: Library +Added 'auth' method to smtplib to make implementing auth mechanisms simpler, +and used it internally in the login method. +.. +.. bpo: 21151 +.. date: 8632 +.. nonce: o7IuiD +.. section: Library +Fixed a segfault in the winreg module when ``None`` is passed as a +``REG_BINARY`` value to SetValueEx. Patch by John Ehresman. +.. +.. bpo: 21090 +.. date: 8631 +.. nonce: 20Ooif +.. section: Library +io.FileIO.readall() does not ignore I/O errors anymore. Before, it ignored +I/O errors if at least the first C call read() succeed. +.. +.. bpo: 5800 +.. date: 8630 +.. nonce: ZJiLZP +.. section: Library +headers parameter of wsgiref.headers.Headers is now optional. Initial patch +by Pablo Torres Navarrete and SilentGhost. +.. +.. bpo: 21781 +.. date: 8629 +.. nonce: u_oiv9 +.. section: Library +ssl.RAND_add() now supports strings longer than 2 GB. +.. +.. bpo: 21679 +.. date: 8628 +.. nonce: CTVT9A +.. section: Library +Prevent extraneous fstat() calls during open(). Patch by Bohuslav Kabrda. +.. +.. bpo: 21863 +.. date: 8627 +.. nonce: BzbwSL +.. section: Library +cProfile now displays the module name of C extension functions, in addition +to their own name. +.. +.. bpo: 11453 +.. date: 8626 +.. nonce: 53Gr_R +.. section: Library +asyncore: emit a ResourceWarning when an unclosed file_wrapper object is +destroyed. The destructor now closes the file if needed. The close() method +can now be called twice: the second call does nothing. +.. +.. bpo: 21858 +.. date: 8625 +.. nonce: 0hbFBG +.. section: Library +Better handling of Python exceptions in the sqlite3 module. +.. +.. bpo: 21476 +.. date: 8624 +.. nonce: VN-5pW +.. section: Library +Make sure the email.parser.BytesParser TextIOWrapper is discarded after +parsing, so the input file isn't unexpectedly closed. +.. +.. bpo: 20295 +.. date: 8623 +.. nonce: U1MPhw +.. section: Library +imghdr now recognizes OpenEXR format images. +.. +.. bpo: 21729 +.. date: 8622 +.. nonce: dk7o_U +.. section: Library +Used the "with" statement in the dbm.dumb module to ensure files closing. +Patch by Claudiu Popa. +.. +.. bpo: 21491 +.. date: 8621 +.. nonce: Zxmut- +.. section: Library +socketserver: Fix a race condition in child processes reaping. +.. +.. bpo: 21719 +.. date: 8620 +.. nonce: DhQz3I +.. section: Library +Added the ``st_file_attributes`` field to os.stat_result on Windows. +.. +.. bpo: 21832 +.. date: 8619 +.. nonce: PBA0Uu +.. section: Library +Require named tuple inputs to be exact strings. +.. +.. bpo: 21722 +.. date: 8618 +.. nonce: WTHuRy +.. section: Library +The distutils "upload" command now exits with a non-zero return code when +uploading fails. Patch by Martin Dengler. +.. +.. bpo: 21723 +.. date: 8617 +.. nonce: r86fwb +.. section: Library +asyncio.Queue: support any type of number (ex: float) for the maximum size. +Patch written by Vajrasky Kok. +.. +.. bpo: 21711 +.. date: 8616 +.. nonce: JWPFQZ +.. section: Library +support for "site-python" directories has now been removed from the site +module (it was deprecated in 3.4). +.. +.. bpo: 17552 +.. date: 8615 +.. nonce: NunErD +.. section: Library +new socket.sendfile() method allowing a file to be sent over a socket by +using high-performance os.sendfile() on UNIX. Patch by Giampaolo Rodola'. +.. +.. bpo: 18039 +.. date: 8614 +.. nonce: vC9hNy +.. section: Library +dbm.dump.open() now always creates a new database when the flag has the +value 'n'. Patch by Claudiu Popa. +.. +.. bpo: 21326 +.. date: 8613 +.. nonce: Y6iW3s +.. section: Library +Add a new is_closed() method to asyncio.BaseEventLoop. run_forever() and +run_until_complete() methods of asyncio.BaseEventLoop now raise an exception +if the event loop was closed. +.. +.. bpo: 21766 +.. date: 8612 +.. nonce: 0xk_xC +.. section: Library +Prevent a security hole in CGIHTTPServer by URL unquoting paths before +checking for a CGI script at that path. +.. +.. bpo: 21310 +.. date: 8611 +.. nonce: 2mjByJ +.. section: Library +Fixed possible resource leak in failed open(). +.. +.. bpo: 21256 +.. date: 8610 +.. nonce: dGq6cw +.. section: Library +Printout of keyword args should be in deterministic order in a mock function +call. This will help to write better doctests. +.. +.. bpo: 21677 +.. date: 8609 +.. nonce: 58CDDD +.. section: Library +Fixed chaining nonnormalized exceptions in io close() methods. +.. +.. bpo: 11709 +.. date: 8608 +.. nonce: JdObvL +.. section: Library +Fix the pydoc.help function to not fail when sys.stdin is not a valid file. +.. +.. bpo: 21515 +.. date: 8607 +.. nonce: D9TLJF +.. section: Library +tempfile.TemporaryFile now uses os.O_TMPFILE flag is available. +.. +.. bpo: 13223 +.. date: 8606 +.. nonce: 9AzEbN +.. section: Library +Fix pydoc.writedoc so that the HTML documentation for methods that use +'self' in the example code is generated correctly. +.. +.. bpo: 21463 +.. date: 8605 +.. nonce: 09PsgH +.. section: Library +In urllib.request, fix pruning of the FTP cache. +.. +.. bpo: 21618 +.. date: 8604 +.. nonce: 3Z7WS3 +.. section: Library +The subprocess module could fail to close open fds that were inherited by +the calling process and already higher than POSIX resource limits would +otherwise allow. On systems with a functioning /proc/self/fd or /dev/fd +interface the max is now ignored and all fds are closed. +.. +.. bpo: 20383 +.. date: 8603 +.. nonce: pSPFpW +.. section: Library +Introduce importlib.util.module_from_spec() as the preferred way to create a +new module. +.. +.. bpo: 21552 +.. date: 8602 +.. nonce: uVy4tM +.. section: Library +Fixed possible integer overflow of too long string lengths in the tkinter +module on 64-bit platforms. +.. +.. bpo: 14315 +.. date: 8601 +.. nonce: YzZzS8 +.. section: Library +The zipfile module now ignores extra fields in the central directory that +are too short to be parsed instead of letting a struct.unpack error bubble +up as this "bad data" appears in many real world zip files in the wild and +is ignored by other zip tools. +.. +.. bpo: 13742 +.. date: 8600 +.. nonce: QJiVSC +.. section: Library +Added "key" and "reverse" parameters to heapq.merge(). (First draft of patch +contributed by Simon Sapin.) +.. +.. bpo: 21402 +.. date: 8599 +.. nonce: 51vDXt +.. section: Library +tkinter.ttk now works when default root window is not set. +.. +.. bpo: 3015 +.. date: 8598 +.. nonce: FE_PII +.. section: Library +``_tkinter.create()`` now creates ``tkapp`` object with ``wantobjects=1`` by +default. +.. +.. bpo: 10203 +.. date: 8597 +.. nonce: zgr0hh +.. section: Library +sqlite3.Row now truly supports sequence protocol. In particular it supports +reverse() and negative indices. Original patch by Claudiu Popa. +.. +.. bpo: 18807 +.. date: 8596 +.. nonce: XP7p8B +.. section: Library +If copying (no symlinks) specified for a venv, then the python interpreter +aliases (python, python3) are now created by copying rather than symlinking. +.. +.. bpo: 20197 +.. date: 8595 +.. nonce: nYR9fq +.. section: Library +Added support for the WebP image type in the imghdr module. Patch by Fabrice +Aneche and Claudiu Popa. +.. +.. bpo: 21513 +.. date: 8594 +.. nonce: ro4AOe +.. section: Library +Speedup some properties of IP addresses (IPv4Address, IPv6Address) such as +.is_private or .is_multicast. +.. +.. bpo: 21137 +.. date: 8593 +.. nonce: wgHb_F +.. section: Library +Improve the repr for threading.Lock() and its variants by showing the +"locked" or "unlocked" status. Patch by Berker Peksag. +.. +.. bpo: 21538 +.. date: 8592 +.. nonce: Q60FWA +.. section: Library +The plistlib module now supports loading of binary plist files when +reference or offset size is not a power of two. +.. +.. bpo: 21455 +.. date: 8591 +.. nonce: 6-Uvv4 +.. section: Library +Add a default backlog to socket.listen(). +.. +.. bpo: 21525 +.. date: 8590 +.. nonce: hAKOve +.. section: Library +Most Tkinter methods which accepted tuples now accept lists too. +.. +.. bpo: 22166 +.. date: 8589 +.. nonce: sZYhmv +.. section: Library +With the assistance of a new internal _codecs._forget_codec helping +function, test_codecs now clears the encoding caches to avoid the appearance +of a reference leak +.. +.. bpo: 22236 +.. date: 8588 +.. nonce: ginJSI +.. section: Library +Tkinter tests now don't reuse default root window. New root window is +created for every test class. +.. +.. bpo: 10744 +.. date: 8587 +.. nonce: kfV0wm +.. section: Library +Fix :pep:`3118` format strings on ctypes objects with a nontrivial shape. +.. +.. bpo: 20826 +.. date: 8586 +.. nonce: 3rXqMC +.. section: Library +Optimize ipaddress.collapse_addresses(). +.. +.. bpo: 21487 +.. date: 8585 +.. nonce: sX8YmK +.. section: Library +Optimize ipaddress.summarize_address_range() and +ipaddress.{IPv4Network,IPv6Network}.subnets(). +.. +.. bpo: 21486 +.. date: 8584 +.. nonce: CeFKRP +.. section: Library +Optimize parsing of netmasks in ipaddress.IPv4Network and +ipaddress.IPv6Network. +.. +.. bpo: 13916 +.. date: 8583 +.. nonce: D77YVH +.. section: Library +Disallowed the surrogatepass error handler for non UTF-\* encodings. +.. +.. bpo: 20998 +.. date: 8582 +.. nonce: fkxpXI +.. section: Library +Fixed re.fullmatch() of repeated single character pattern with ignore case. +Original patch by Matthew Barnett. +.. +.. bpo: 21075 +.. date: 8581 +.. nonce: f_hmEh +.. section: Library +fileinput.FileInput now reads bytes from standard stream if binary mode is +specified. Patch by Sam Kimbrel. +.. +.. bpo: 19775 +.. date: 8580 +.. nonce: yxxD_R +.. section: Library +Add a samefile() method to pathlib Path objects. Initial patch by Vajrasky +Kok. +.. +.. bpo: 21226 +.. date: 8579 +.. nonce: pzGmG1 +.. section: Library +Set up modules properly in PyImport_ExecCodeModuleObject (and friends). +.. +.. bpo: 21398 +.. date: 8578 +.. nonce: guSBXt +.. section: Library +Fix a unicode error in the pydoc pager when the documentation contains +characters not encodable to the stdout encoding. +.. +.. bpo: 16531 +.. date: 8577 +.. nonce: AhrY_v +.. section: Library +ipaddress.IPv4Network and ipaddress.IPv6Network now accept an (address, +netmask) tuple argument, so as to easily construct network objects from +existing addresses. +.. +.. bpo: 21156 +.. date: 8576 +.. nonce: 3dmBEp +.. section: Library +importlib.abc.InspectLoader.source_to_code() is now a staticmethod. +.. +.. bpo: 21424 +.. date: 8575 +.. nonce: 8CJBqW +.. section: Library +Simplified and optimized heaqp.nlargest() and nmsmallest() to make fewer +tuple comparisons. +.. +.. bpo: 21396 +.. date: 8574 +.. nonce: cqO6DN +.. section: Library +Fix TextIOWrapper(..., write_through=True) to not force a flush() on the +underlying binary stream. Patch by akira. +.. +.. bpo: 18314 +.. date: 8573 +.. nonce: NCd_KF +.. section: Library +Unlink now removes junctions on Windows. Patch by Kim Gräsman +.. +.. bpo: 21088 +.. date: 8572 +.. nonce: WOg7Xy +.. section: Library +Bugfix for curses.window.addch() regression in 3.4.0. In porting to Argument +Clinic, the first two arguments were reversed. +.. +.. bpo: 21407 +.. date: 8571 +.. nonce: cZjFde +.. section: Library +_decimal: The module now supports function signatures. +.. +.. bpo: 10650 +.. date: 8570 +.. nonce: HYT4Oe +.. section: Library +Remove the non-standard 'watchexp' parameter from the Decimal.quantize() +method in the Python version. It had never been present in the C version. +.. +.. bpo: 21469 +.. date: 8569 +.. nonce: _fFGuq +.. section: Library +Reduced the risk of false positives in robotparser by checking to make sure +that robots.txt has been read or does not exist prior to returning True in +can_fetch(). +.. +.. bpo: 19414 +.. date: 8568 +.. nonce: bAAw4D +.. section: Library +Have the OrderedDict mark deleted links as unusable. This gives an early +failure if the link is deleted during iteration. +.. +.. bpo: 21421 +.. date: 8567 +.. nonce: 5AKAat +.. section: Library +Add __slots__ to the MappingViews ABC. Patch by Josh Rosenberg. +.. +.. bpo: 21101 +.. date: 8566 +.. nonce: Lj-_P4 +.. section: Library +Eliminate double hashing in the C speed-up code for collections.Counter(). +.. +.. bpo: 21321 +.. date: 8565 +.. nonce: wUkTON +.. section: Library +itertools.islice() now releases the reference to the source iterator when +the slice is exhausted. Patch by Anton Afanasyev. +.. +.. bpo: 21057 +.. date: 8564 +.. nonce: 0TC4Xl +.. section: Library +TextIOWrapper now allows the underlying binary stream's read() or read1() +method to return an arbitrary bytes-like object (such as a memoryview). +Patch by Nikolaus Rath. +.. +.. bpo: 20951 +.. date: 8563 +.. nonce: tF0dJi +.. section: Library +SSLSocket.send() now raises either SSLWantReadError or SSLWantWriteError on +a non-blocking socket if the operation would block. Previously, it would +return 0. Patch by Nikolaus Rath. +.. +.. bpo: 13248 +.. date: 8562 +.. nonce: 7vtGj0 +.. section: Library +removed previously deprecated asyncore.dispatcher __getattr__ cheap +inheritance hack. +.. +.. bpo: 9815 +.. date: 8561 +.. nonce: 52FPlI +.. section: Library +assertRaises now tries to clear references to local variables in the +exception's traceback. +.. +.. bpo: 19940 +.. date: 8560 +.. nonce: 2qtBQ8 +.. section: Library +ssl.cert_time_to_seconds() now interprets the given time string in the UTC +timezone (as specified in RFC 5280), not the local timezone. +.. +.. bpo: 13204 +.. date: 8559 +.. nonce: ZPKA5g +.. section: Library +Calling sys.flags.__new__ would crash the interpreter, now it raises a +TypeError. +.. +.. bpo: 19385 +.. date: 8558 +.. nonce: PexO_g +.. section: Library +Make operations on a closed dbm.dumb database always raise the same +exception. +.. +.. bpo: 21207 +.. date: 8557 +.. nonce: Hr72AB +.. section: Library +Detect when the os.urandom cached fd has been closed or replaced, and open +it anew. +.. +.. bpo: 21291 +.. date: 8556 +.. nonce: 5sSLWN +.. section: Library +subprocess's Popen.wait() is now thread safe so that multiple threads may be +calling wait() or poll() on a Popen instance at the same time without losing +the Popen.returncode value. +.. +.. bpo: 21127 +.. date: 8555 +.. nonce: A1aBjG +.. section: Library +Path objects can now be instantiated from str subclass instances (such as +``numpy.str_``). +.. +.. bpo: 15002 +.. date: 8554 +.. nonce: qorYDe +.. section: Library +urllib.response object to use _TemporaryFileWrapper (and +_TemporaryFileCloser) facility. Provides a better way to handle file +descriptor close. Patch contributed by Christian Theune. +.. +.. bpo: 12220 +.. date: 8553 +.. nonce: U25uE9 +.. section: Library +mindom now raises a custom ValueError indicating it doesn't support spaces +in URIs instead of letting a 'split' ValueError bubble up. +.. +.. bpo: 21068 +.. date: 8552 +.. nonce: 9k6N9m +.. section: Library +The ssl.PROTOCOL* constants are now enum members. +.. +.. bpo: 21276 +.. date: 8551 +.. nonce: JkfhvQ +.. section: Library +posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. +.. +.. bpo: 21262 +.. date: 8550 +.. nonce: 1J5ylk +.. section: Library +New method assert_not_called for Mock. It raises AssertionError if the mock +has been called. +.. +.. bpo: 21238 +.. date: 8549 +.. nonce: 5CDoox +.. section: Library +New keyword argument ``unsafe`` to Mock. It raises ``AttributeError`` in case of +an attribute startswith assert or assret. +.. +.. bpo: 20896 +.. date: 8548 +.. nonce: oWwAb1 +.. section: Library +ssl.get_server_certificate() now uses PROTOCOL_SSLv23, not PROTOCOL_SSLv3, +for maximum compatibility. +.. +.. bpo: 21239 +.. date: 8547 +.. nonce: EalCNt +.. section: Library +patch.stopall() didn't work deterministically when the same name was patched +more than once. +.. +.. bpo: 21203 +.. date: 8546 +.. nonce: 1IMs-Z +.. section: Library +Updated fileConfig and dictConfig to remove inconsistencies. Thanks to Jure +Koren for the patch. +.. +.. bpo: 21222 +.. date: 8545 +.. nonce: G6MQBP +.. section: Library +Passing name keyword argument to mock.create_autospec now works. +.. +.. bpo: 21197 +.. date: 8544 +.. nonce: Gzfqdl +.. section: Library +Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX. +.. +.. bpo: 17498 +.. date: 8543 +.. nonce: LR9xyb +.. section: Library +Some SMTP servers disconnect after certain errors, violating strict RFC +conformance. Instead of losing the error code when we issue the subsequent +RSET, smtplib now returns the error code and defers raising the +SMTPServerDisconnected error until the next command is issued. +.. +.. bpo: 17826 +.. date: 8542 +.. nonce: z0zMRV +.. section: Library +setting an iterable side_effect on a mock function created by +create_autospec now works. Patch by Kushal Das. +.. +.. bpo: 7776 +.. date: 8541 +.. nonce: K5S2Pe +.. section: Library +Fix ``Host:`` header and reconnection when using +http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath. +.. +.. bpo: 20968 +.. date: 8540 +.. nonce: 53Aagz +.. section: Library +unittest.mock.MagicMock now supports division. Patch by Johannes Baiter. +.. +.. bpo: 21529 +.. date: 8539 +.. nonce: 57R_Fc +.. section: Library +Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second +parameter. Bug reported by Guido Vranken. (See also: :cve:`2014-4616`) +.. +.. bpo: 21169 +.. date: 8538 +.. nonce: KE7B0M +.. section: Library +getpass now handles non-ascii characters that the input stream encoding +cannot encode by re-encoding using the replace error handler. +.. +.. bpo: 21171 +.. date: 8537 +.. nonce: iUbV9S +.. section: Library +Fixed undocumented filter API of the rot13 codec. Patch by Berker Peksag. +.. +.. bpo: 20539 +.. date: 8536 +.. nonce: 62nbEb +.. section: Library +Improved math.factorial error message for large positive inputs and changed +exception type (OverflowError -> ValueError) for large negative inputs. +.. +.. bpo: 21172 +.. date: 8535 +.. nonce: dQ7yY7 +.. section: Library +isinstance check relaxed from dict to collections.Mapping. +.. +.. bpo: 21155 +.. date: 8534 +.. nonce: JSKEE7 +.. section: Library +asyncio.EventLoop.create_unix_server() now raises a ValueError if path and +sock are specified at the same time. +.. +.. bpo: 21136 +.. date: 8533 +.. nonce: JZAKv3 +.. section: Library +Avoid unnecessary normalization of Fractions resulting from power and other +operations. Patch by Raymond Hettinger. +.. +.. bpo: 17621 +.. date: 8532 +.. nonce: 1x0mvJ +.. section: Library +Introduce importlib.util.LazyLoader. +.. +.. bpo: 21076 +.. date: 8531 +.. nonce: upxQc6 +.. section: Library +signal module constants were turned into enums. Patch by Giampaolo Rodola'. +.. +.. bpo: 20636 +.. date: 8530 +.. nonce: KGh-BD +.. section: Library +Improved the repr of Tkinter widgets. +.. +.. bpo: 19505 +.. date: 8529 +.. nonce: VEtIE6 +.. section: Library +The items, keys, and values views of OrderedDict now support reverse +iteration using reversed(). +.. +.. bpo: 21149 +.. date: 8528 +.. nonce: cnjwMR +.. section: Library +Improved thread-safety in logging cleanup during interpreter shutdown. +Thanks to Devin Jeanpierre for the patch. +.. +.. bpo: 21058 +.. date: 8527 +.. nonce: IhluPP +.. section: Library +Fix a leak of file descriptor in :func:`tempfile.NamedTemporaryFile`, close +the file descriptor if :func:`io.open` fails +.. +.. bpo: 21200 +.. date: 8526 +.. nonce: Kht8yD +.. section: Library +Return None from pkgutil.get_loader() when __spec__ is missing. +.. +.. bpo: 21013 +.. date: 8525 +.. nonce: 3s8Ic0 +.. section: Library +Enhance ssl.create_default_context() when used for server side sockets to +provide better security by default. +.. +.. bpo: 20145 +.. date: 8524 +.. nonce: FP5FY0 +.. section: Library +``assertRaisesRegex`` and ``assertWarnsRegex`` now raise a ``TypeError`` if the +second argument is not a string or compiled regex. +.. +.. bpo: 20633 +.. date: 8523 +.. nonce: 6kaPjT +.. section: Library +Replace relative import by absolute import. +.. +.. bpo: 20980 +.. date: 8522 +.. nonce: cYszHY +.. section: Library +Stop wrapping exception when using ThreadPool. +.. +.. bpo: 21082 +.. date: 8521 +.. nonce: GLzGlV +.. section: Library +In os.makedirs, do not set the process-wide umask. Note this changes +behavior of makedirs when exist_ok=True. +.. +.. bpo: 20990 +.. date: 8520 +.. nonce: PBfjW3 +.. section: Library +Fix issues found by pyflakes for multiprocessing. +.. +.. bpo: 21015 +.. date: 8519 +.. nonce: xnwWAH +.. section: Library +SSL contexts will now automatically select an elliptic curve for ECDH key +exchange on OpenSSL 1.0.2 and later, and otherwise default to "prime256v1". +.. +.. bpo: 21000 +.. date: 8518 +.. nonce: JUyyVV +.. section: Library +Improve the command-line interface of json.tool. +.. +.. bpo: 20995 +.. date: 8517 +.. nonce: KSORJT +.. section: Library +Enhance default ciphers used by the ssl module to enable better security and +prioritize perfect forward secrecy. +.. +.. bpo: 20884 +.. date: 8516 +.. nonce: qNmub_ +.. section: Library +Don't assume that __file__ is defined on importlib.__init__. +.. +.. bpo: 21499 +.. date: 8515 +.. nonce: wU4OBi +.. section: Library +Ignore __builtins__ in several test_importlib.test_api tests. +.. +.. bpo: 20627 +.. date: 8514 +.. nonce: fgfQ1x +.. section: Library +xmlrpc.client.ServerProxy is now a context manager. +.. +.. bpo: 19165 +.. date: 8513 +.. nonce: sAkUjU +.. section: Library +The formatter module now raises DeprecationWarning instead of +PendingDeprecationWarning. +.. +.. bpo: 13936 +.. date: 8512 +.. nonce: _Q0Yog +.. section: Library +Remove the ability of datetime.time instances to be considered false in +boolean contexts. +.. +.. bpo: 18931 +.. date: 8511 +.. nonce: mq4Mud +.. section: Library +selectors module now supports /dev/poll on Solaris. Patch by Giampaolo +Rodola'. +.. +.. bpo: 19977 +.. date: 8510 +.. nonce: A-sQ_V +.. section: Library +When the ``LC_TYPE`` locale is the POSIX locale (``C`` locale), +:py:data:`sys.stdin` and :py:data:`sys.stdout` are now using the +``surrogateescape`` error handler, instead of the ``strict`` error handler. +.. +.. bpo: 20574 +.. date: 8509 +.. nonce: KaKqSs +.. section: Library +Implement incremental decoder for cp65001 code (Windows code page 65001, +Microsoft UTF-8). +.. +.. bpo: 20879 +.. date: 8508 +.. nonce: myeYdq +.. section: Library +Delay the initialization of encoding and decoding tables for base32, ascii85 +and base85 codecs in the base64 module, and delay the initialization of the +unquote_to_bytes() table of the urllib.parse module, to not waste memory if +these modules are not used. +.. +.. bpo: 19157 +.. date: 8507 +.. nonce: V1-XhC +.. section: Library +Include the broadcast address in the usable hosts for IPv6 in ipaddress. +.. +.. bpo: 11599 +.. date: 8506 +.. nonce: 9QOXf4 +.. section: Library +When an external command (e.g. compiler) fails, distutils now prints out the +whole command line (instead of just the command name) if the environment +variable DISTUTILS_DEBUG is set. +.. +.. bpo: 4931 +.. date: 8505 +.. nonce: uF10hr +.. section: Library +distutils should not produce unhelpful "error: None" messages anymore. +distutils.util.grok_environment_error is kept but doc-deprecated. +.. +.. bpo: 20875 +.. date: 8504 +.. nonce: IjfI5V +.. section: Library +Prevent possible gzip "'read' is not defined" NameError. Patch by Claudiu +Popa. +.. +.. bpo: 11558 +.. date: 8503 +.. nonce: pxrsmq +.. section: Library +``email.message.Message.attach`` now returns a more useful error message if +``attach`` is called on a message for which ``is_multipart`` is False. +.. +.. bpo: 20283 +.. date: 8502 +.. nonce: v0Vs9V +.. section: Library +RE pattern methods now accept the string keyword parameters as documented. +The pattern and source keyword parameters are left as deprecated aliases. +.. +.. bpo: 20778 +.. date: 8501 +.. nonce: g_fAGI +.. section: Library +Fix modulefinder to work with bytecode-only modules. +.. +.. bpo: 20791 +.. date: 8500 +.. nonce: n_zrkc +.. section: Library +copy.copy() now doesn't make a copy when the input is a bytes object. +Initial patch by Peter Otten. +.. +.. bpo: 19748 +.. date: 8499 +.. nonce: kiA171 +.. section: Library +On AIX, time.mktime() now raises an OverflowError for year outsize range +[1902; 2037]. +.. +.. bpo: 19573 +.. date: 8498 +.. nonce: QJvX_V +.. section: Library +inspect.signature: Use enum for parameter kind constants. +.. +.. bpo: 20726 +.. date: 8497 +.. nonce: 0yfRDI +.. section: Library +inspect.signature: Make Signature and Parameter picklable. +.. +.. bpo: 17373 +.. date: 8496 +.. nonce: ECwuJO +.. section: Library +Add inspect.Signature.from_callable method. +.. +.. bpo: 20378 +.. date: 8495 +.. nonce: l9M3H- +.. section: Library +Improve repr of inspect.Signature and inspect.Parameter. +.. +.. bpo: 20816 +.. date: 8494 +.. nonce: DFMEgN +.. section: Library +Fix inspect.getcallargs() to raise correct TypeError for missing +keyword-only arguments. Patch by Jeremiah Lowin. +.. +.. bpo: 20817 +.. date: 8493 +.. nonce: O5XyZB +.. section: Library +Fix inspect.getcallargs() to fail correctly if more than 3 arguments are +missing. Patch by Jeremiah Lowin. +.. +.. bpo: 6676 +.. date: 8492 +.. nonce: CJu5On +.. section: Library +Ensure a meaningful exception is raised when attempting to parse more than +one XML document per pyexpat xmlparser instance. (Original patches by +Hirokazu Yamamoto and Amaury Forgeot d'Arc, with suggested wording by David +Gutteridge) +.. +.. bpo: 21117 +.. date: 8491 +.. nonce: hyH7EK +.. section: Library +Fix inspect.signature to better support functools.partial. Due to the +specifics of functools.partial implementation, positional-or-keyword +arguments passed as keyword arguments become keyword-only. +.. +.. bpo: 20334 +.. date: 8490 +.. nonce: 0yFmfQ +.. section: Library +inspect.Signature and inspect.Parameter are now hashable. Thanks to Antony +Lee for bug reports and suggestions. +.. +.. bpo: 15916 +.. date: 8489 +.. nonce: _vhKPn +.. section: Library +doctest.DocTestSuite returns an empty unittest.TestSuite instead of raising +ValueError if it finds no tests +.. +.. bpo: 21209 +.. date: 8488 +.. nonce: wRE7Dn +.. section: Library +Fix asyncio.tasks.CoroWrapper to workaround a bug in yield-from +implementation in CPythons prior to 3.4.1. +.. +.. bpo: 0 +.. date: 8487 +.. nonce: Q1I78Z +.. section: Library +asyncio: Add gi_{frame,running,code} properties to CoroWrapper (upstream +issue #163). +.. +.. bpo: 21311 +.. date: 8486 +.. nonce: JsDF8H +.. section: Library +Avoid exception in _osx_support with non-standard compiler configurations. +Patch by John Szakmeister. +.. +.. bpo: 11571 +.. date: 8485 +.. nonce: RPeGNo +.. section: Library +Ensure that the turtle window becomes the topmost window when launched on OS +X. +.. +.. bpo: 21801 +.. date: 8484 +.. nonce: rzfhYl +.. section: Library +Validate that __signature__ is None or an instance of Signature. +.. +.. bpo: 21923 +.. date: 8483 +.. nonce: hXnoZa +.. section: Library +Prevent AttributeError in distutils.sysconfig.customize_compiler due to +possible uninitialized _config_vars. +.. +.. bpo: 21323 +.. date: 8482 +.. nonce: quiWfl +.. section: Library +Fix http.server to again handle scripts in CGI subdirectories, broken by the +fix for security issue #19435. Patch by Zach Byrne. +.. +.. bpo: 22733 +.. date: 8481 +.. nonce: 21gJBp +.. section: Library +Fix ffi_prep_args not zero-extending argument values correctly on 64-bit +Windows. +.. +.. bpo: 23302 +.. date: 8480 +.. nonce: X2dabK +.. section: Library +Default to TCP_NODELAY=1 upon establishing an HTTPConnection. Removed use of +hard-coded MSS as it's an optimization that's no longer needed with Nagle +disabled. +.. +.. bpo: 20577 +.. date: 8479 +.. nonce: Y71IMj +.. section: IDLE +Configuration of the max line length for the FormatParagraph extension has +been moved from the General tab of the Idle preferences dialog to the +FormatParagraph tab of the Config Extensions dialog. Patch by Tal Einat. +.. +.. bpo: 16893 +.. date: 8478 +.. nonce: JfHAA4 +.. section: IDLE +Update Idle doc chapter to match current Idle and add new information. +.. +.. bpo: 3068 +.. date: 8477 +.. nonce: TYjXTA +.. section: IDLE +Add Idle extension configuration dialog to Options menu. Changes are written +to HOME/.idlerc/config-extensions.cfg. Original patch by Tal Einat. +.. +.. bpo: 16233 +.. date: 8476 +.. nonce: sOadNo +.. section: IDLE +A module browser (File : Class Browser, Alt+C) requires an editor window +with a filename. When Class Browser is requested otherwise, from a shell, +output window, or 'Untitled' editor, Idle no longer displays an error box. +It now pops up an Open Module box (Alt+M). If a valid name is entered and a +module is opened, a corresponding browser is also opened. +.. +.. bpo: 4832 +.. date: 8475 +.. nonce: GRKi9M +.. section: IDLE +Save As to type Python files automatically adds .py to the name you enter +(even if your system does not display it). Some systems automatically add +.txt when type is Text files. +.. +.. bpo: 21986 +.. date: 8474 +.. nonce: 04GUv2 +.. section: IDLE +Code objects are not normally pickled by the pickle module. To match this, +they are no longer pickled when running under Idle. +.. +.. bpo: 17390 +.. date: 8473 +.. nonce: I4vHFh +.. section: IDLE +Adjust Editor window title; remove 'Python', move version to end. +.. +.. bpo: 14105 +.. date: 8472 +.. nonce: -FZwYH +.. section: IDLE +Idle debugger breakpoints no longer disappear when inserting or deleting +lines. +.. +.. bpo: 17172 +.. date: 8471 +.. nonce: R8jkU1 +.. section: IDLE +Turtledemo can now be run from Idle. Currently, the entry is on the Help +menu, but it may move to Run. Patch by Ramchandra Apt and Lita Cho. +.. +.. bpo: 21765 +.. date: 8470 +.. nonce: JyiDbd +.. section: IDLE +Add support for non-ascii identifiers to HyperParser. +.. +.. bpo: 21940 +.. date: 8469 +.. nonce: VlIRz7 +.. section: IDLE +Add unittest for WidgetRedirector. Initial patch by Saimadhav Heblikar. +.. +.. bpo: 18592 +.. date: 8468 +.. nonce: sMG-SZ +.. section: IDLE +Add unittest for SearchDialogBase. Patch by Phil Webster. +.. +.. bpo: 21694 +.. date: 8467 +.. nonce: 1oLmRo +.. section: IDLE +Add unittest for ParenMatch. Patch by Saimadhav Heblikar. +.. +.. bpo: 21686 +.. date: 8466 +.. nonce: TAkFB0 +.. section: IDLE +add unittest for HyperParser. Original patch by Saimadhav Heblikar. +.. +.. bpo: 12387 +.. date: 8465 +.. nonce: XO7Ozk +.. section: IDLE +Add missing upper(lower)case versions of default Windows key bindings for +Idle so Caps Lock does not disable them. Patch by Roger Serwy. +.. +.. bpo: 21695 +.. date: 8464 +.. nonce: g-t0Tm +.. section: IDLE +Closing a Find-in-files output window while the search is still in progress +no longer closes Idle. +.. +.. bpo: 18910 +.. date: 8463 +.. nonce: ke8lMK +.. section: IDLE +Add unittest for textView. Patch by Phil Webster. +.. +.. bpo: 18292 +.. date: 8462 +.. nonce: ks_3wm +.. section: IDLE +Add unittest for AutoExpand. Patch by Saihadhav Heblikar. +.. +.. bpo: 18409 +.. date: 8461 +.. nonce: 7fe-aK +.. section: IDLE +Add unittest for AutoComplete. Patch by Phil Webster. +.. +.. bpo: 21477 +.. date: 8460 +.. nonce: 33NOe0 +.. section: IDLE +htest.py - Improve framework, complete set of tests. Patches by Saimadhav +Heblikar +.. +.. bpo: 18104 +.. date: 8459 +.. nonce: 8Fj9Pf +.. section: IDLE +Add idlelib/idle_test/htest.py with a few sample tests to begin +consolidating and improving human-validated tests of Idle. Change other +files as needed to work with htest. Running the module as __main__ runs all +tests. +.. +.. bpo: 21139 +.. date: 8458 +.. nonce: kqetng +.. section: IDLE +Change default paragraph width to 72, the :pep:`8` recommendation. +.. +.. bpo: 21284 +.. date: 8457 +.. nonce: KKJfmv +.. section: IDLE +Paragraph reformat test passes after user changes reformat width. +.. +.. bpo: 17654 +.. date: 8456 +.. nonce: NbzhNS +.. section: IDLE +Ensure IDLE menus are customized properly on OS X for non-framework builds +and for all variants of Tk. +.. +.. bpo: 23180 +.. date: 8455 +.. nonce: cE_89F +.. section: IDLE +Rename IDLE "Windows" menu item to "Window". Patch by Al Sweigart. +.. +.. bpo: 15506 +.. date: 8454 +.. nonce: nh8KlR +.. section: Build +Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure script. +.. +.. bpo: 22935 +.. date: 8453 +.. nonce: -vY3lc +.. section: Build +Allow the ssl module to be compiled if openssl doesn't support SSL 3. +.. +.. bpo: 22592 +.. date: 8452 +.. nonce: O_IE9W +.. section: Build +Drop support of the Borland C compiler to build Python. The distutils module +still supports it to build extensions. +.. +.. bpo: 22591 +.. date: 8451 +.. nonce: wwBlG8 +.. section: Build +Drop support of MS-DOS, especially of the DJGPP compiler (MS-DOS port of +GCC). +.. +.. bpo: 16537 +.. date: 8450 +.. nonce: llFo71 +.. section: Build +Check whether self.extensions is empty in setup.py. Patch by Jonathan +Hosmer. +.. +.. bpo: 22359 +.. date: 8449 +.. nonce: YYFOFG +.. section: Build +Remove incorrect uses of recursive make. Patch by Jonas Wagner. +.. +.. bpo: 21958 +.. date: 8448 +.. nonce: 3rq4qR +.. section: Build +Define HAVE_ROUND when building with Visual Studio 2013 and above. Patch by +Zachary Turner. +.. +.. bpo: 18093 +.. date: 8447 +.. nonce: gnZieo +.. section: Build +the programs that embed the CPython runtime are now in a separate "Programs" +directory, rather than being kept in the Modules directory. +.. +.. bpo: 15759 +.. date: 8446 +.. nonce: iGLR6O +.. section: Build +"make suspicious", "make linkcheck" and "make doctest" in Doc/ now display +special message when and only when there are failures. +.. +.. bpo: 21141 +.. date: 8445 +.. nonce: 669LzK +.. section: Build +The Windows build process no longer attempts to find Perl, instead relying +on OpenSSL source being configured and ready to build. The +``PCbuild\build_ssl.py`` script has been re-written and re-named to +``PCbuild\prepare_ssl.py``, and takes care of configuring OpenSSL source for +both 32 and 64 bit platforms. OpenSSL sources obtained from svn.python.org +will always be pre-configured and ready to build. +.. +.. bpo: 21037 +.. date: 8444 +.. nonce: v1rZzo +.. section: Build +Add a build option to enable AddressSanitizer support. +.. +.. bpo: 19962 +.. date: 8443 +.. nonce: HDlwsE +.. section: Build +The Windows build process now creates "python.bat" in the root of the source +tree, which passes all arguments through to the most recently built +interpreter. +.. +.. bpo: 21285 +.. date: 8442 +.. nonce: cU9p2E +.. section: Build +Refactor and fix curses configure check to always search in a ncursesw +directory. +.. +.. bpo: 15234 +.. date: 8441 +.. nonce: vlM720 +.. section: Build +For BerkeleyDB and Sqlite, only add the found library and include directories +if they aren't already being searched. This avoids an explicit runtime +library dependency. +.. +.. bpo: 17861 +.. date: 8440 +.. nonce: jCi44U +.. section: Build +Tools/scripts/generate_opcode_h.py automatically regenerates +Include/opcode.h from Lib/opcode.py if the latter gets any change. +.. +.. bpo: 20644 +.. date: 8439 +.. nonce: aV0zq7 +.. section: Build +OS X installer build support for documentation build changes in 3.4.1: +assume externally supplied sphinx-build is available in /usr/bin. +.. +.. bpo: 20022 +.. date: 8438 +.. nonce: EqSCTW +.. section: Build +Eliminate use of deprecated bundlebuilder in OS X builds. +.. +.. bpo: 15968 +.. date: 8437 +.. nonce: vxUxHK +.. section: Build +Incorporated Tcl, Tk, and Tix builds into the Windows build solution. +.. +.. bpo: 17095 +.. date: 8436 +.. nonce: -XEBIU +.. section: Build +Fix Modules/Setup *shared* support. +.. +.. bpo: 21811 +.. date: 8435 +.. nonce: 3_Xyr- +.. section: Build +Anticipated fixes to support OS X versions > 10.9. +.. +.. bpo: 21166 +.. date: 8434 +.. nonce: KAl7aO +.. section: Build +Prevent possible segfaults and other random failures of python +--generate-posix-vars in pybuilddir.txt build target. +.. +.. bpo: 18096 +.. date: 8433 +.. nonce: ELyAUJ +.. section: Build +Fix library order returned by python-config. +.. +.. bpo: 17219 +.. date: 8432 +.. nonce: q8ueQ0 +.. section: Build +Add library build dir for Python extension cross-builds. +.. +.. bpo: 22919 +.. date: 8431 +.. nonce: 1XThL9 +.. section: Build +Windows build updated to support VC 14.0 (Visual Studio 2015), which will be +used for the official release. +.. +.. bpo: 21236 +.. date: 8430 +.. nonce: 84LXxj +.. section: Build +Build _msi.pyd with cabinet.lib instead of fci.lib +.. +.. bpo: 17128 +.. date: 8429 +.. nonce: U2biLA +.. section: Build +Use private version of OpenSSL for OS X 10.5+ installer. +.. +.. bpo: 14203 +.. date: 8428 +.. nonce: 3hv0TX +.. section: C API +Remove obsolete support for view==NULL in PyBuffer_FillInfo(), +bytearray_getbuffer(), bytesiobuf_getbuffer() and array_buffer_getbuf(). All +functions now raise BufferError in that case. +.. +.. bpo: 22445 +.. date: 8427 +.. nonce: s0AOAS +.. section: C API +PyBuffer_IsContiguous() now implements precise contiguity tests, compatible +with NumPy's NPY_RELAXED_STRIDES_CHECKING compilation flag. Previously the +function reported false negatives for corner cases. +.. +.. bpo: 22079 +.. date: 8426 +.. nonce: zhs2qM +.. section: C API +PyType_Ready() now checks that statically allocated type has no dynamically +allocated bases. +.. +.. bpo: 22453 +.. date: 8425 +.. nonce: XoO4ns +.. section: C API +Removed non-documented macro PyObject_REPR(). +.. +.. bpo: 18395 +.. date: 8424 +.. nonce: YC9B06 +.. section: C API +Rename ``_Py_char2wchar()`` to :c:func:`Py_DecodeLocale`, rename +``_Py_wchar2char()`` to :c:func:`Py_EncodeLocale`, and document these +functions. +.. +.. bpo: 21233 +.. date: 8423 +.. nonce: 98hZAt +.. section: C API +Add new C functions: PyMem_RawCalloc(), PyMem_Calloc(), PyObject_Calloc(), +_PyObject_GC_Calloc(). bytes(int) is now using ``calloc()`` instead of +``malloc()`` for large objects which is faster and use less memory. +.. +.. bpo: 20942 +.. date: 8422 +.. nonce: qHLJ5- +.. section: C API +PyImport_ImportFrozenModuleObject() no longer sets __file__ to match what +importlib does; this affects _frozen_importlib as well as any module loaded +using imp.init_frozen(). +.. +.. bpo: 19548 +.. date: 8421 +.. nonce: yOX8sS +.. section: Documentation +Update the codecs module documentation to better cover the distinction +between text encodings and other codecs, together with other clarifications. +Patch by Martin Panter. +.. +.. bpo: 22394 +.. date: 8420 +.. nonce: 6bJywY +.. section: Documentation +Doc/Makefile now supports ``make venv PYTHON=../python`` to create a venv +for generating the documentation, e.g., ``make html +PYTHON=venv/bin/python3``. +.. +.. bpo: 21514 +.. date: 8419 +.. nonce: 1H16T6 +.. section: Documentation +The documentation of the json module now refers to new JSON RFC 7159 instead +of obsoleted RFC 4627. +.. +.. bpo: 21777 +.. date: 8418 +.. nonce: dtQCWV +.. section: Documentation +The binary sequence methods on bytes and bytearray are now documented +explicitly, rather than assuming users will be able to derive the expected +behaviour from the behaviour of the corresponding str methods. +.. +.. bpo: 6916 +.. date: 8417 +.. nonce: 4sm3nE +.. section: Documentation +undocument deprecated asynchat.fifo class. +.. +.. bpo: 17386 +.. date: 8416 +.. nonce: ivaGLb +.. section: Documentation +Expanded functionality of the ``Doc/make.bat`` script to make it much more +comparable to ``Doc/Makefile``. +.. +.. bpo: 21312 +.. date: 8415 +.. nonce: 6IqcV4 +.. section: Documentation +Update the thread_foobar.h template file to include newer threading APIs. +Patch by Jack McCracken. +.. +.. bpo: 21043 +.. date: 8414 +.. nonce: oEOC8O +.. section: Documentation +Remove the recommendation for specific CA organizations and to mention the +ability to load the OS certificates. +.. +.. bpo: 20765 +.. date: 8413 +.. nonce: Rv3GgV +.. section: Documentation +Add missing documentation for PurePath.with_name() and +PurePath.with_suffix(). +.. +.. bpo: 19407 +.. date: 8412 +.. nonce: mRyNnG +.. section: Documentation +New package installation and distribution guides based on the Python +Packaging Authority tools. Existing guides have been retained as legacy +links from the distutils docs, as they still contain some required reference +material for tool developers that isn't recorded anywhere else. +.. +.. bpo: 19697 +.. date: 8411 +.. nonce: 2jMQBP +.. section: Documentation +Document cases where __main__.__spec__ is None. +.. +.. bpo: 18982 +.. date: 8410 +.. nonce: TynSM6 +.. section: Tests +Add tests for CLI of the calendar module. +.. +.. bpo: 19548 +.. date: 8409 +.. nonce: 25Kxq_ +.. section: Tests +Added some additional checks to test_codecs to ensure that statements in the +updated documentation remain accurate. Patch by Martin Panter. +.. +.. bpo: 22838 +.. date: 8408 +.. nonce: VZBtZg +.. section: Tests +All test_re tests now work with unittest test discovery. +.. +.. bpo: 22173 +.. date: 8407 +.. nonce: dxIIVx +.. section: Tests +Update lib2to3 tests to use unittest test discovery. +.. +.. bpo: 16000 +.. date: 8406 +.. nonce: Y7O6TP +.. section: Tests +Convert test_curses to use unittest. +.. +.. bpo: 21456 +.. date: 8405 +.. nonce: Axsw43 +.. section: Tests +Skip two tests in test_urllib2net.py if _ssl module not present. Patch by +Remi Pointel. +.. +.. bpo: 20746 +.. date: 8404 +.. nonce: N2pzAY +.. section: Tests +Fix test_pdb to run in refleak mode (-R). Patch by Xavier de Gaye. +.. +.. bpo: 22060 +.. date: 8403 +.. nonce: TduJNO +.. section: Tests +test_ctypes has been somewhat cleaned up and simplified; it now uses +unittest test discovery to find its tests. +.. +.. bpo: 22104 +.. date: 8402 +.. nonce: -YYDup +.. section: Tests +regrtest.py no longer holds a reference to the suite of tests loaded from +test modules that don't define test_main(). +.. +.. bpo: 22111 +.. date: 8401 +.. nonce: 0XlFAU +.. section: Tests +Assorted cleanups in test_imaplib. Patch by Milan Oberkirch. +.. +.. bpo: 22002 +.. date: 8400 +.. nonce: jpiaA2 +.. section: Tests +Added ``load_package_tests`` function to test.support and used it to +implement/augment test discovery in test_asyncio, test_email, +test_importlib, test_json, and test_tools. +.. +.. bpo: 21976 +.. date: 8399 +.. nonce: Slq6se +.. section: Tests +Fix test_ssl to accept LibreSSL version strings. Thanks to William Orr. +.. +.. bpo: 21918 +.. date: 8398 +.. nonce: QTFFSj +.. section: Tests +Converted test_tools from a module to a package containing separate test +files for each tested script. +.. +.. bpo: 9554 +.. date: 8397 +.. nonce: VsP0Ve +.. section: Tests +Use modern unittest features in test_argparse. Initial patch by Denver +Coneybeare and Radu Voicilas. +.. +.. bpo: 20155 +.. date: 8396 +.. nonce: nphzS3 +.. section: Tests +Changed HTTP method names in failing tests in test_httpservers so that +packet filtering software (specifically Windows Base Filtering Engine) does +not interfere with the transaction semantics expected by the tests. +.. +.. bpo: 19493 +.. date: 8395 +.. nonce: SwbzLQ +.. section: Tests +Refactored the ctypes test package to skip tests explicitly rather than +silently. +.. +.. bpo: 18492 +.. date: 8394 +.. nonce: ylPRU7 +.. section: Tests +All resources are now allowed when tests are not run by regrtest.py. +.. +.. bpo: 21634 +.. date: 8393 +.. nonce: Eng06F +.. section: Tests +Fix pystone micro-benchmark: use floor division instead of true division to +benchmark integers instead of floating-point numbers. Set pystone version to +1.2. Patch written by Lennart Regebro. +.. +.. bpo: 21605 +.. date: 8392 +.. nonce: qsLV8d +.. section: Tests +Added tests for Tkinter images. +.. +.. bpo: 21493 +.. date: 8391 +.. nonce: NqhRsy +.. section: Tests +Added test for ntpath.expanduser(). Original patch by Claudiu Popa. +.. +.. bpo: 19925 +.. date: 8390 +.. nonce: dhMx08 +.. section: Tests +Added tests for the spwd module. Original patch by Vajrasky Kok. +.. +.. bpo: 21522 +.. date: 8389 +.. nonce: b-VwFW +.. section: Tests +Added Tkinter tests for Listbox.itemconfigure(), +PanedWindow.paneconfigure(), and Menu.entryconfigure(). +.. +.. bpo: 17756 +.. date: 8388 +.. nonce: LLfbfU +.. section: Tests +Fix test_code test when run from the installed location. +.. +.. bpo: 17752 +.. date: 8387 +.. nonce: P8iG44 +.. section: Tests +Fix distutils tests when run from the installed location. +.. +.. bpo: 18604 +.. date: 8386 +.. nonce: Q00Xrj +.. section: Tests +Consolidated checks for GUI availability. All platforms now at least check +whether Tk can be instantiated when the GUI resource is requested. +.. +.. bpo: 21275 +.. date: 8385 +.. nonce: lI5FkX +.. section: Tests +Fix a socket test on KFreeBSD. +.. +.. bpo: 21223 +.. date: 8384 +.. nonce: lMY6ka +.. section: Tests +Pass test_site/test_startup_imports when some of the extensions are built as +builtins. +.. +.. bpo: 20635 +.. date: 8383 +.. nonce: mzWmoS +.. section: Tests +Added tests for Tk geometry managers. +.. +.. bpo: 0 +.. date: 8382 +.. nonce: E5XNqr +.. section: Tests +Add test case for freeze. +.. +.. bpo: 20743 +.. date: 8381 +.. nonce: hxZQUf +.. section: Tests +Fix a reference leak in test_tcl. +.. +.. bpo: 21097 +.. date: 8380 +.. nonce: gsUesm +.. section: Tests +Move test_namespace_pkgs into test_importlib. +.. +.. bpo: 21503 +.. date: 8379 +.. nonce: H9TPCg +.. section: Tests +Use test_both() consistently in test_importlib. +.. +.. bpo: 20939 +.. date: 8378 +.. nonce: x3KQ35 +.. section: Tests +Avoid various network test failures due to new redirect of +http://www.python.org/ to https://www.python.org: use http://www.example.com +instead. +.. +.. bpo: 20668 +.. date: 8377 +.. nonce: IWjOSC +.. section: Tests +asyncio tests no longer rely on tests.txt file. (Patch by Vajrasky Kok) +.. +.. bpo: 21093 +.. date: 8376 +.. nonce: CcpRim +.. section: Tests +Prevent failures of ctypes test_macholib on OS X if a copy of libz exists in +$HOME/lib or /usr/local/lib. +.. +.. bpo: 22770 +.. date: 8375 +.. nonce: FxAh91 +.. section: Tests +Prevent some Tk segfaults on OS X when running gui tests. +.. +.. bpo: 23211 +.. date: 8374 +.. nonce: Bc-QfJ +.. section: Tests +Workaround test_logging failure on some OS X 10.6 systems. +.. +.. bpo: 23345 +.. date: 8373 +.. nonce: HIGBKx +.. section: Tests +Prevent test_ssl failures with large OpenSSL patch level values (like +0.9.8zc). +.. +.. bpo: 22314 +.. date: 8372 +.. nonce: ws6xsH +.. section: Tools/Demos +pydoc now works when the LINES environment variable is set. +.. +.. bpo: 22615 +.. date: 8371 +.. nonce: My3DWN +.. section: Tools/Demos +Argument Clinic now supports the "type" argument for the int converter. +This permits using the int converter with enums and typedefs. +.. +.. bpo: 20076 +.. date: 8370 +.. nonce: ZNuBrC +.. section: Tools/Demos +The makelocalealias.py script no longer ignores UTF-8 mapping. +.. +.. bpo: 20079 +.. date: 8369 +.. nonce: ogPXcK +.. section: Tools/Demos +The makelocalealias.py script now can parse the SUPPORTED file from glibc +sources and supports command line options for source paths. +.. +.. bpo: 22201 +.. date: 8368 +.. nonce: k1Awbh +.. section: Tools/Demos +Command-line interface of the zipfile module now correctly extracts ZIP +files with directory entries. Patch by Ryan Wilson. +.. +.. bpo: 22120 +.. date: 8367 +.. nonce: KmBUj- +.. section: Tools/Demos +For functions using an unsigned integer return converter, Argument Clinic +now generates a cast to that type for the comparison to -1 in the generated +code. (This suppresses a compilation warning.) +.. +.. bpo: 18974 +.. date: 8366 +.. nonce: I3DdAo +.. section: Tools/Demos +Tools/scripts/diff.py now uses argparse instead of optparse. +.. +.. bpo: 21906 +.. date: 8365 +.. nonce: ZsKy9v +.. section: Tools/Demos +Make Tools/scripts/md5sum.py work in Python 3. Patch by Zachary Ware. +.. +.. bpo: 21629 +.. date: 8364 +.. nonce: 9kZmQl +.. section: Tools/Demos +Fix Argument Clinic's "--converters" feature. +.. +.. bpo: 0 +.. date: 8363 +.. nonce: _-ge-g +.. section: Tools/Demos +Add support for ``yield from`` to 2to3. +.. +.. bpo: 0 +.. date: 8362 +.. nonce: dpFbyZ +.. section: Tools/Demos +Add support for the :pep:`465` matrix multiplication operator to 2to3. +.. +.. bpo: 16047 +.. date: 8361 +.. nonce: IsgTzm +.. section: Tools/Demos +Fix module exception list and __file__ handling in freeze. Patch by Meador +Inge. +.. +.. bpo: 11824 +.. date: 8360 +.. nonce: OBWc3T +.. section: Tools/Demos +Consider ABI tags in freeze. Patch by Meador Inge. +.. +.. bpo: 20535 +.. date: 8359 +.. nonce: 0qkvZZ +.. section: Tools/Demos +PYTHONWARNING no longer affects the run_tests.py script. Patch by Arfrever +Frehtes Taifersar Arahesis. +.. +.. bpo: 23260 +.. date: 8358 +.. nonce: aZ5VLH +.. section: Windows +Update Windows installer +.. +.. bpo: 0 +.. date: 8357 +.. nonce: _aEUNt +.. section: Windows +The bundled version of Tcl/Tk has been updated to 8.6.3. The most visible +result of this change is the addition of new native file dialogs when +running on Windows Vista or newer. See Tcl/Tk's TIP 432 for more +information. Also, this version of Tcl/Tk includes support for Windows 10. +.. +.. bpo: 17896 +.. date: 8356 +.. nonce: o79rHM +.. section: Windows +The Windows build scripts now expect external library sources to be in +``PCbuild\..\externals`` rather than ``PCbuild\..\..``. +.. +.. bpo: 17717 +.. date: 8355 +.. nonce: y1zoye +.. section: Windows +The Windows build scripts now use a copy of NASM pulled from svn.python.org +to build OpenSSL. +.. +.. bpo: 21907 +.. date: 8354 +.. nonce: jm1smN +.. section: Windows +Improved the batch scripts provided for building Python. +.. +.. bpo: 22644 +.. date: 8353 +.. nonce: gosBki +.. section: Windows +The bundled version of OpenSSL has been updated to 1.0.1j. +.. +.. bpo: 10747 +.. date: 8352 +.. nonce: LTWhLn +.. section: Windows +Use versioned labels in the Windows start menu. Patch by Olive Kilburn. +.. +.. bpo: 22980 +.. date: 8351 +.. nonce: -UypE5 +.. section: Windows +.pyd files with a version and platform tag (for example, ".cp35-win32.pyd") +will now be loaded in preference to those without tags. + + +"""