Package: retype
retype!!! Note this project is no longer supported/maintained as of 2022 August 14th !!!Re-apply type annotations from .pyi stubs to your codebase.UsageUsage: retype [OPTIONS] [SRC]...

  Re-apply type annotations from .pyi stubs to your codebase.

Options:
  -p, --pyi-dir DIRECTORY     Where to find .pyi stubs.  [default: types]
  -t, --target-dir DIRECTORY  Where to write annotated sources.  [default:
                              typed-src]
  -i, --incremental           Allow for missing type annotations in both stubs
                              and the source.
  -q, --quiet                 Don't emit warnings, just errors.
  -a, --replace-any           Allow replacing Any annotations.
  --hg                        Post-process files to preserve implicit byte
                              literals.
  --traceback                 Show a Python traceback on error.
  --version                   Show the version and exit.
  --help                      Show this message and exit.When you runretype, it goes through all files you passed as SRC, finds the
corresponding .pyi files in thetypes/directory, and re-applies typing annotations
from .pyi to the sources, using the Python 3 function and variable annotation syntax.
The resulting combined sources are saved intyped-src/.You can also pass directories as sources, in which caseretypewill look for .py files
in them recursively.It's smart enough to do the following:reapply typing importsreapply function argument annotationsreapply function return value annotationsreapply method argument and return value annotationsreapply function-level variable annotationsreapply module-level name annotationsreapply module-level type aliasesreapply class-level field annotationsreapply instance-level field annotationsvalidate existing source annotations against the .pyi filevalidate source function signatures against the .pyi fileread function signature type comments in .pyi filesread variable type comments in .pyi filesconsider existing source type comments as annotationsremove duplicate type comments from source when annotations are appliednormalize remaining type comments in the source to annotations; this is done even if
the corresponding .pyi file is missingList of things to be doneadd a --backward option to output type comments instead of annotationshandle if sys.version_info and sys.platform checks in stubsDesign principlesit's okay for a given .pyi file to be incomplete (gradual typing, baby!)it's okay for functions and classes to be out of order in .pyi files and the sourceit's anerrorfor a function or class to be missing in the sourceit's anerrorfor a function's signature to be incompatible between the .pyi file
and the sourceit's anerrorfor an annotation in the source to be incompatible with the .pyi
fileKnown limitationsLine numbers in the annotated source will no longer match original source code; this
is because re-application of types requires copying typing imports and alias
definitions from the .pyi file.While formatting of the original source will be preserved, formatting of the applied
annotations might differ from the formatting in .pyi files.The source where type annotations get re-applied cannot use the legacyprintstatement; that wouldn't work at runtime.Class attribute annotations in__init__()methods are moved verbatim to the
respective__init__()method in the implementation. They are never translated into
class-level attribute annotations, so if that method is missing, the translation will
fail. Similarly, class-level attribute annotations are never applied to__init__()methods.Forward references in .pyi files will only be properly resolved for type aliases and
type vars (by inserting them right before they're used in the source). Other forms of
forward references will not work in the source code due to out-of-order class and
function definitions. Modify your .pyi files to use strings.retypewill not
automatically discover failing forward references and stringify them.Local variable annotations present in the .pyi file are transferred to the body level
of the given function in the source. In other words, if the source defines a variable
within a loop or a conditional statement branch,retypewill create an value-less
variable annotation at the beginning of the function. Use a broad type and constrain
types in relevant code paths usingassert isinstance()checks.Because of the above, existing source variable annotations and type comments buried in
conditionals and loops will not be deduplicated (andmypywill complain that a name
was already defined).An async function in the stub will match a regular function of the same name in the
same scope and vice versa. This is to enable annotating async functions spelled with@asyncio.coroutine.TestsJust run:toxOMG, this is Python 3 only!Relax, you can runretypeas a toolperfectly fine under Python 3.6+ even if you
want to analyze Python 2 code. This way you'll be able to parse all of the new syntax
supported on Python 3 but alsoeffectively allthe Python 2 syntax at the same time.By making the code exclusively Python 3.6+, I'm able to focus on the quality of the
checks and re-use all the nice features of the new releases (check outpathlibor f-strings) instead of wasting
cycles on Unicode compatibility, etc.Note: to retype modules using f-strings you need to run on Python 3.6.2+ due tobpo-23894.LicenseMITChange Log20.10.0Mark python3.8 and python3.9 compatible19.9.0add a module entry-point, now you can call it viapython -m retypeautomatically all files excluded by.gitignoreon merge of folderssupport forast3.numfix a bug that meant the merge was not recursive in pathsusesetup.cfgbased packaging configurationadd PEP-517/8 declaration viapyproject.tomlinclude license in both wheel and sdistthis projects code base is now formatted withblack, import ordered viaisort, and
uses Azure Pipelines instead of Travis (also testing on Windows and macOs)17.12.0support --replace-any to allow replacing pre-existingAnyannotations without
raising errorsbugfix: don't re-apply# type: ignoreas an annotation if followed by another
comment. Original patch by Shannon Zhu.17.6.3bugfix: don't try to re-apply# type: ignoreas a function annotationbugfix: support arbitrary source file encodings, patch by Michael Overmeyer.bugfix: support missing newlines at the end of the file, patch by Michael Overmeyer.bugfix: in --incremental, format default values according to PEP 8 (no spaces around
the = sign if the type is missing)17.6.2bugfix: --incremental didn't work with multiple arguments before17.6.1support --incremental stub application (i.e. allow for both stubs and the source to be
missing annotations for some arguments and/or return value)17.6.0support async functionssupport --traceback for getting more information about internal errors17.4.0first published versiondate-versionedAuthorsGlued together byŁukasz Langa. Multiple improvements byMichael OvermeyerandBernat Gabor.