_id
stringlengths 2
7
| title
stringlengths 1
88
| partition
stringclasses 3
values | text
stringlengths 75
19.8k
| language
stringclasses 1
value | meta_information
dict |
|---|---|---|---|---|---|
q280100
|
FrontendWidget._prompt_finished_hook
|
test
|
def _prompt_finished_hook(self):
""" Called immediately after a prompt is finished, i.e. when some input
will be processed and a new prompt displayed.
"""
# Flush all state from the input splitter so the next round of
# reading input starts with a clean buffer.
self._input_splitter.reset()
if not self._reading:
self._highlighter.highlighting_on = False
|
python
|
{
"resource": ""
}
|
q280101
|
FrontendWidget._tab_pressed
|
test
|
def _tab_pressed(self):
""" Called when the tab key is pressed. Returns whether to continue
processing the event.
"""
# Perform tab completion if:
# 1) The cursor is in the input buffer.
# 2) There is a non-whitespace character before the cursor.
text = self._get_input_buffer_cursor_line()
if text is None:
return False
complete = bool(text[:self._get_input_buffer_cursor_column()].strip())
if complete:
self._complete()
return not complete
|
python
|
{
"resource": ""
}
|
q280102
|
FrontendWidget._context_menu_make
|
test
|
def _context_menu_make(self, pos):
""" Reimplemented to add an action for raw copy.
"""
menu = super(FrontendWidget, self)._context_menu_make(pos)
for before_action in menu.actions():
if before_action.shortcut().matches(QtGui.QKeySequence.Paste) == \
QtGui.QKeySequence.ExactMatch:
menu.insertAction(before_action, self._copy_raw_action)
break
return menu
|
python
|
{
"resource": ""
}
|
q280103
|
FrontendWidget._event_filter_console_keypress
|
test
|
def _event_filter_console_keypress(self, event):
""" Reimplemented for execution interruption and smart backspace.
"""
key = event.key()
if self._control_key_down(event.modifiers(), include_command=False):
if key == QtCore.Qt.Key_C and self._executing:
self.request_interrupt_kernel()
return True
elif key == QtCore.Qt.Key_Period:
self.request_restart_kernel()
return True
elif not event.modifiers() & QtCore.Qt.AltModifier:
# Smart backspace: remove four characters in one backspace if:
# 1) everything left of the cursor is whitespace
# 2) the four characters immediately left of the cursor are spaces
if key == QtCore.Qt.Key_Backspace:
col = self._get_input_buffer_cursor_column()
cursor = self._control.textCursor()
if col > 3 and not cursor.hasSelection():
text = self._get_input_buffer_cursor_line()[:col]
if text.endswith(' ') and not text.strip():
cursor.movePosition(QtGui.QTextCursor.Left,
QtGui.QTextCursor.KeepAnchor, 4)
cursor.removeSelectedText()
return True
return super(FrontendWidget, self)._event_filter_console_keypress(event)
|
python
|
{
"resource": ""
}
|
q280104
|
FrontendWidget._insert_continuation_prompt
|
test
|
def _insert_continuation_prompt(self, cursor):
""" Reimplemented for auto-indentation.
"""
super(FrontendWidget, self)._insert_continuation_prompt(cursor)
cursor.insertText(' ' * self._input_splitter.indent_spaces)
|
python
|
{
"resource": ""
}
|
q280105
|
FrontendWidget._handle_complete_reply
|
test
|
def _handle_complete_reply(self, rep):
""" Handle replies for tab completion.
"""
self.log.debug("complete: %s", rep.get('content', ''))
cursor = self._get_cursor()
info = self._request_info.get('complete')
if info and info.id == rep['parent_header']['msg_id'] and \
info.pos == cursor.position():
text = '.'.join(self._get_context())
cursor.movePosition(QtGui.QTextCursor.Left, n=len(text))
self._complete_with_items(cursor, rep['content']['matches'])
|
python
|
{
"resource": ""
}
|
q280106
|
FrontendWidget._silent_exec_callback
|
test
|
def _silent_exec_callback(self, expr, callback):
"""Silently execute `expr` in the kernel and call `callback` with reply
the `expr` is evaluated silently in the kernel (without) output in
the frontend. Call `callback` with the
`repr <http://docs.python.org/library/functions.html#repr> `_ as first argument
Parameters
----------
expr : string
valid string to be executed by the kernel.
callback : function
function accepting one argument, as a string. The string will be
the `repr` of the result of evaluating `expr`
The `callback` is called with the `repr()` of the result of `expr` as
first argument. To get the object, do `eval()` on the passed value.
See Also
--------
_handle_exec_callback : private method, deal with calling callback with reply
"""
# generate uuid, which would be used as an indication of whether or
# not the unique request originated from here (can use msg id ?)
local_uuid = str(uuid.uuid1())
msg_id = self.kernel_manager.shell_channel.execute('',
silent=True, user_expressions={ local_uuid:expr })
self._callback_dict[local_uuid] = callback
self._request_info['execute'][msg_id] = self._ExecutionRequest(msg_id, 'silent_exec_callback')
|
python
|
{
"resource": ""
}
|
q280107
|
FrontendWidget._handle_exec_callback
|
test
|
def _handle_exec_callback(self, msg):
"""Execute `callback` corresponding to `msg` reply, after ``_silent_exec_callback``
Parameters
----------
msg : raw message send by the kernel containing an `user_expressions`
and having a 'silent_exec_callback' kind.
Notes
-----
This function will look for a `callback` associated with the
corresponding message id. Association has been made by
`_silent_exec_callback`. `callback` is then called with the `repr()`
of the value of corresponding `user_expressions` as argument.
`callback` is then removed from the known list so that any message
coming again with the same id won't trigger it.
"""
user_exp = msg['content'].get('user_expressions')
if not user_exp:
return
for expression in user_exp:
if expression in self._callback_dict:
self._callback_dict.pop(expression)(user_exp[expression])
|
python
|
{
"resource": ""
}
|
q280108
|
FrontendWidget._handle_execute_reply
|
test
|
def _handle_execute_reply(self, msg):
""" Handles replies for code execution.
"""
self.log.debug("execute: %s", msg.get('content', ''))
msg_id = msg['parent_header']['msg_id']
info = self._request_info['execute'].get(msg_id)
# unset reading flag, because if execute finished, raw_input can't
# still be pending.
self._reading = False
if info and info.kind == 'user' and not self._hidden:
# Make sure that all output from the SUB channel has been processed
# before writing a new prompt.
self.kernel_manager.sub_channel.flush()
# Reset the ANSI style information to prevent bad text in stdout
# from messing up our colors. We're not a true terminal so we're
# allowed to do this.
if self.ansi_codes:
self._ansi_processor.reset_sgr()
content = msg['content']
status = content['status']
if status == 'ok':
self._process_execute_ok(msg)
elif status == 'error':
self._process_execute_error(msg)
elif status == 'aborted':
self._process_execute_abort(msg)
self._show_interpreter_prompt_for_reply(msg)
self.executed.emit(msg)
self._request_info['execute'].pop(msg_id)
elif info and info.kind == 'silent_exec_callback' and not self._hidden:
self._handle_exec_callback(msg)
self._request_info['execute'].pop(msg_id)
else:
super(FrontendWidget, self)._handle_execute_reply(msg)
|
python
|
{
"resource": ""
}
|
q280109
|
FrontendWidget._handle_input_request
|
test
|
def _handle_input_request(self, msg):
""" Handle requests for raw_input.
"""
self.log.debug("input: %s", msg.get('content', ''))
if self._hidden:
raise RuntimeError('Request for raw input during hidden execution.')
# Make sure that all output from the SUB channel has been processed
# before entering readline mode.
self.kernel_manager.sub_channel.flush()
def callback(line):
self.kernel_manager.stdin_channel.input(line)
if self._reading:
self.log.debug("Got second input request, assuming first was interrupted.")
self._reading = False
self._readline(msg['content']['prompt'], callback=callback)
|
python
|
{
"resource": ""
}
|
q280110
|
FrontendWidget._handle_kernel_died
|
test
|
def _handle_kernel_died(self, since_last_heartbeat):
""" Handle the kernel's death by asking if the user wants to restart.
"""
self.log.debug("kernel died: %s", since_last_heartbeat)
if self.custom_restart:
self.custom_restart_kernel_died.emit(since_last_heartbeat)
else:
message = 'The kernel heartbeat has been inactive for %.2f ' \
'seconds. Do you want to restart the kernel? You may ' \
'first want to check the network connection.' % \
since_last_heartbeat
self.restart_kernel(message, now=True)
|
python
|
{
"resource": ""
}
|
q280111
|
FrontendWidget._handle_object_info_reply
|
test
|
def _handle_object_info_reply(self, rep):
""" Handle replies for call tips.
"""
self.log.debug("oinfo: %s", rep.get('content', ''))
cursor = self._get_cursor()
info = self._request_info.get('call_tip')
if info and info.id == rep['parent_header']['msg_id'] and \
info.pos == cursor.position():
# Get the information for a call tip. For now we format the call
# line as string, later we can pass False to format_call and
# syntax-highlight it ourselves for nicer formatting in the
# calltip.
content = rep['content']
# if this is from pykernel, 'docstring' will be the only key
if content.get('ismagic', False):
# Don't generate a call-tip for magics. Ideally, we should
# generate a tooltip, but not on ( like we do for actual
# callables.
call_info, doc = None, None
else:
call_info, doc = call_tip(content, format_call=True)
if call_info or doc:
self._call_tip_widget.show_call_info(call_info, doc)
|
python
|
{
"resource": ""
}
|
q280112
|
FrontendWidget._handle_pyout
|
test
|
def _handle_pyout(self, msg):
""" Handle display hook output.
"""
self.log.debug("pyout: %s", msg.get('content', ''))
if not self._hidden and self._is_from_this_session(msg):
text = msg['content']['data']
self._append_plain_text(text + '\n', before_prompt=True)
|
python
|
{
"resource": ""
}
|
q280113
|
FrontendWidget._handle_stream
|
test
|
def _handle_stream(self, msg):
""" Handle stdout, stderr, and stdin.
"""
self.log.debug("stream: %s", msg.get('content', ''))
if not self._hidden and self._is_from_this_session(msg):
# Most consoles treat tabs as being 8 space characters. Convert tabs
# to spaces so that output looks as expected regardless of this
# widget's tab width.
text = msg['content']['data'].expandtabs(8)
self._append_plain_text(text, before_prompt=True)
self._control.moveCursor(QtGui.QTextCursor.End)
|
python
|
{
"resource": ""
}
|
q280114
|
FrontendWidget._handle_shutdown_reply
|
test
|
def _handle_shutdown_reply(self, msg):
""" Handle shutdown signal, only if from other console.
"""
self.log.debug("shutdown: %s", msg.get('content', ''))
if not self._hidden and not self._is_from_this_session(msg):
if self._local_kernel:
if not msg['content']['restart']:
self.exit_requested.emit(self)
else:
# we just got notified of a restart!
time.sleep(0.25) # wait 1/4 sec to reset
# lest the request for a new prompt
# goes to the old kernel
self.reset()
else: # remote kernel, prompt on Kernel shutdown/reset
title = self.window().windowTitle()
if not msg['content']['restart']:
reply = QtGui.QMessageBox.question(self, title,
"Kernel has been shutdown permanently. "
"Close the Console?",
QtGui.QMessageBox.Yes,QtGui.QMessageBox.No)
if reply == QtGui.QMessageBox.Yes:
self.exit_requested.emit(self)
else:
# XXX: remove message box in favor of using the
# clear_on_kernel_restart setting?
reply = QtGui.QMessageBox.question(self, title,
"Kernel has been reset. Clear the Console?",
QtGui.QMessageBox.Yes,QtGui.QMessageBox.No)
if reply == QtGui.QMessageBox.Yes:
time.sleep(0.25) # wait 1/4 sec to reset
# lest the request for a new prompt
# goes to the old kernel
self.reset()
|
python
|
{
"resource": ""
}
|
q280115
|
FrontendWidget.execute_file
|
test
|
def execute_file(self, path, hidden=False):
""" Attempts to execute file with 'path'. If 'hidden', no output is
shown.
"""
self.execute('execfile(%r)' % path, hidden=hidden)
|
python
|
{
"resource": ""
}
|
q280116
|
FrontendWidget.interrupt_kernel
|
test
|
def interrupt_kernel(self):
""" Attempts to interrupt the running kernel.
Also unsets _reading flag, to avoid runtime errors
if raw_input is called again.
"""
if self.custom_interrupt:
self._reading = False
self.custom_interrupt_requested.emit()
elif self.kernel_manager.has_kernel:
self._reading = False
self.kernel_manager.interrupt_kernel()
else:
self._append_plain_text('Kernel process is either remote or '
'unspecified. Cannot interrupt.\n')
|
python
|
{
"resource": ""
}
|
q280117
|
FrontendWidget.reset
|
test
|
def reset(self, clear=False):
""" Resets the widget to its initial state if ``clear`` parameter or
``clear_on_kernel_restart`` configuration setting is True, otherwise
prints a visual indication of the fact that the kernel restarted, but
does not clear the traces from previous usage of the kernel before it
was restarted. With ``clear=True``, it is similar to ``%clear``, but
also re-writes the banner and aborts execution if necessary.
"""
if self._executing:
self._executing = False
self._request_info['execute'] = {}
self._reading = False
self._highlighter.highlighting_on = False
if self.clear_on_kernel_restart or clear:
self._control.clear()
self._append_plain_text(self.banner)
else:
self._append_plain_text("# restarting kernel...")
self._append_html("<hr><br>")
# XXX: Reprinting the full banner may be too much, but once #1680 is
# addressed, that will mitigate it.
#self._append_plain_text(self.banner)
# update output marker for stdout/stderr, so that startup
# messages appear after banner:
self._append_before_prompt_pos = self._get_cursor().position()
self._show_interpreter_prompt()
|
python
|
{
"resource": ""
}
|
q280118
|
FrontendWidget.restart_kernel
|
test
|
def restart_kernel(self, message, now=False):
""" Attempts to restart the running kernel.
"""
# FIXME: now should be configurable via a checkbox in the dialog. Right
# now at least the heartbeat path sets it to True and the manual restart
# to False. But those should just be the pre-selected states of a
# checkbox that the user could override if so desired. But I don't know
# enough Qt to go implementing the checkbox now.
if self.custom_restart:
self.custom_restart_requested.emit()
elif self.kernel_manager.has_kernel:
# Pause the heart beat channel to prevent further warnings.
self.kernel_manager.hb_channel.pause()
# Prompt the user to restart the kernel. Un-pause the heartbeat if
# they decline. (If they accept, the heartbeat will be un-paused
# automatically when the kernel is restarted.)
if self.confirm_restart:
buttons = QtGui.QMessageBox.Yes | QtGui.QMessageBox.No
result = QtGui.QMessageBox.question(self, 'Restart kernel?',
message, buttons)
do_restart = result == QtGui.QMessageBox.Yes
else:
# confirm_restart is False, so we don't need to ask user
# anything, just do the restart
do_restart = True
if do_restart:
try:
self.kernel_manager.restart_kernel(now=now)
except RuntimeError:
self._append_plain_text('Kernel started externally. '
'Cannot restart.\n',
before_prompt=True
)
else:
self.reset()
else:
self.kernel_manager.hb_channel.unpause()
else:
self._append_plain_text('Kernel process is either remote or '
'unspecified. Cannot restart.\n',
before_prompt=True
)
|
python
|
{
"resource": ""
}
|
q280119
|
FrontendWidget._call_tip
|
test
|
def _call_tip(self):
""" Shows a call tip, if appropriate, at the current cursor location.
"""
# Decide if it makes sense to show a call tip
if not self.enable_calltips:
return False
cursor = self._get_cursor()
cursor.movePosition(QtGui.QTextCursor.Left)
if cursor.document().characterAt(cursor.position()) != '(':
return False
context = self._get_context(cursor)
if not context:
return False
# Send the metadata request to the kernel
name = '.'.join(context)
msg_id = self.kernel_manager.shell_channel.object_info(name)
pos = self._get_cursor().position()
self._request_info['call_tip'] = self._CallTipRequest(msg_id, pos)
return True
|
python
|
{
"resource": ""
}
|
q280120
|
FrontendWidget._complete
|
test
|
def _complete(self):
""" Performs completion at the current cursor location.
"""
context = self._get_context()
if context:
# Send the completion request to the kernel
msg_id = self.kernel_manager.shell_channel.complete(
'.'.join(context), # text
self._get_input_buffer_cursor_line(), # line
self._get_input_buffer_cursor_column(), # cursor_pos
self.input_buffer) # block
pos = self._get_cursor().position()
info = self._CompletionRequest(msg_id, pos)
self._request_info['complete'] = info
|
python
|
{
"resource": ""
}
|
q280121
|
FrontendWidget._process_execute_error
|
test
|
def _process_execute_error(self, msg):
""" Process a reply for an execution request that resulted in an error.
"""
content = msg['content']
# If a SystemExit is passed along, this means exit() was called - also
# all the ipython %exit magic syntax of '-k' to be used to keep
# the kernel running
if content['ename']=='SystemExit':
keepkernel = content['evalue']=='-k' or content['evalue']=='True'
self._keep_kernel_on_exit = keepkernel
self.exit_requested.emit(self)
else:
traceback = ''.join(content['traceback'])
self._append_plain_text(traceback)
|
python
|
{
"resource": ""
}
|
q280122
|
FrontendWidget._process_execute_ok
|
test
|
def _process_execute_ok(self, msg):
""" Process a reply for a successful execution request.
"""
payload = msg['content']['payload']
for item in payload:
if not self._process_execute_payload(item):
warning = 'Warning: received unknown payload of type %s'
print(warning % repr(item['source']))
|
python
|
{
"resource": ""
}
|
q280123
|
FrontendWidget._document_contents_change
|
test
|
def _document_contents_change(self, position, removed, added):
""" Called whenever the document's content changes. Display a call tip
if appropriate.
"""
# Calculate where the cursor should be *after* the change:
position += added
document = self._control.document()
if position == self._get_cursor().position():
self._call_tip()
|
python
|
{
"resource": ""
}
|
q280124
|
PluginProxy.addPlugin
|
test
|
def addPlugin(self, plugin, call):
"""Add plugin to my list of plugins to call, if it has the attribute
I'm bound to.
"""
meth = getattr(plugin, call, None)
if meth is not None:
if call == 'loadTestsFromModule' and \
len(inspect.getargspec(meth)[0]) == 2:
orig_meth = meth
meth = lambda module, path, **kwargs: orig_meth(module)
self.plugins.append((plugin, meth))
|
python
|
{
"resource": ""
}
|
q280125
|
PluginProxy.chain
|
test
|
def chain(self, *arg, **kw):
"""Call plugins in a chain, where the result of each plugin call is
sent to the next plugin as input. The final output result is returned.
"""
result = None
# extract the static arguments (if any) from arg so they can
# be passed to each plugin call in the chain
static = [a for (static, a)
in zip(getattr(self.method, 'static_args', []), arg)
if static]
for p, meth in self.plugins:
result = meth(*arg, **kw)
arg = static[:]
arg.append(result)
return result
|
python
|
{
"resource": ""
}
|
q280126
|
PluginProxy.generate
|
test
|
def generate(self, *arg, **kw):
"""Call all plugins, yielding each item in each non-None result.
"""
for p, meth in self.plugins:
result = None
try:
result = meth(*arg, **kw)
if result is not None:
for r in result:
yield r
except (KeyboardInterrupt, SystemExit):
raise
except:
exc = sys.exc_info()
yield Failure(*exc)
continue
|
python
|
{
"resource": ""
}
|
q280127
|
PluginProxy.simple
|
test
|
def simple(self, *arg, **kw):
"""Call all plugins, returning the first non-None result.
"""
for p, meth in self.plugins:
result = meth(*arg, **kw)
if result is not None:
return result
|
python
|
{
"resource": ""
}
|
q280128
|
PluginManager.configure
|
test
|
def configure(self, options, config):
"""Configure the set of plugins with the given options
and config instance. After configuration, disabled plugins
are removed from the plugins list.
"""
log.debug("Configuring plugins")
self.config = config
cfg = PluginProxy('configure', self._plugins)
cfg(options, config)
enabled = [plug for plug in self._plugins if plug.enabled]
self.plugins = enabled
self.sort()
log.debug("Plugins enabled: %s", enabled)
|
python
|
{
"resource": ""
}
|
q280129
|
EntryPointPluginManager.loadPlugins
|
test
|
def loadPlugins(self):
"""Load plugins by iterating the `nose.plugins` entry point.
"""
from pkg_resources import iter_entry_points
loaded = {}
for entry_point, adapt in self.entry_points:
for ep in iter_entry_points(entry_point):
if ep.name in loaded:
continue
loaded[ep.name] = True
log.debug('%s load plugin %s', self.__class__.__name__, ep)
try:
plugcls = ep.load()
except KeyboardInterrupt:
raise
except Exception, e:
# never want a plugin load to kill the test run
# but we can't log here because the logger is not yet
# configured
warn("Unable to load plugin %s: %s" % (ep, e),
RuntimeWarning)
continue
if adapt:
plug = adapt(plugcls())
else:
plug = plugcls()
self.addPlugin(plug)
super(EntryPointPluginManager, self).loadPlugins()
|
python
|
{
"resource": ""
}
|
q280130
|
BuiltinPluginManager.loadPlugins
|
test
|
def loadPlugins(self):
"""Load plugins in nose.plugins.builtin
"""
from nose.plugins import builtin
for plug in builtin.plugins:
self.addPlugin(plug())
super(BuiltinPluginManager, self).loadPlugins()
|
python
|
{
"resource": ""
}
|
q280131
|
latex_to_png
|
test
|
def latex_to_png(s, encode=False, backend='mpl'):
"""Render a LaTeX string to PNG.
Parameters
----------
s : str
The raw string containing valid inline LaTeX.
encode : bool, optional
Should the PNG data bebase64 encoded to make it JSON'able.
backend : {mpl, dvipng}
Backend for producing PNG data.
None is returned when the backend cannot be used.
"""
if backend == 'mpl':
f = latex_to_png_mpl
elif backend == 'dvipng':
f = latex_to_png_dvipng
else:
raise ValueError('No such backend {0}'.format(backend))
bin_data = f(s)
if encode and bin_data:
bin_data = encodestring(bin_data)
return bin_data
|
python
|
{
"resource": ""
}
|
q280132
|
latex_to_html
|
test
|
def latex_to_html(s, alt='image'):
"""Render LaTeX to HTML with embedded PNG data using data URIs.
Parameters
----------
s : str
The raw string containing valid inline LateX.
alt : str
The alt text to use for the HTML.
"""
base64_data = latex_to_png(s, encode=True)
if base64_data:
return _data_uri_template_png % (base64_data, alt)
|
python
|
{
"resource": ""
}
|
q280133
|
math_to_image
|
test
|
def math_to_image(s, filename_or_obj, prop=None, dpi=None, format=None):
"""
Given a math expression, renders it in a closely-clipped bounding
box to an image file.
*s*
A math expression. The math portion should be enclosed in
dollar signs.
*filename_or_obj*
A filepath or writable file-like object to write the image data
to.
*prop*
If provided, a FontProperties() object describing the size and
style of the text.
*dpi*
Override the output dpi, otherwise use the default associated
with the output format.
*format*
The output format, eg. 'svg', 'pdf', 'ps' or 'png'. If not
provided, will be deduced from the filename.
"""
from matplotlib import figure
# backend_agg supports all of the core output formats
from matplotlib.backends import backend_agg
from matplotlib.font_manager import FontProperties
from matplotlib.mathtext import MathTextParser
if prop is None:
prop = FontProperties()
parser = MathTextParser('path')
width, height, depth, _, _ = parser.parse(s, dpi=72, prop=prop)
fig = figure.Figure(figsize=(width / 72.0, height / 72.0))
fig.text(0, depth/height, s, fontproperties=prop)
backend_agg.FigureCanvasAgg(fig)
fig.savefig(filename_or_obj, dpi=dpi, format=format)
return depth
|
python
|
{
"resource": ""
}
|
q280134
|
InstallRequirement.check_if_exists
|
test
|
def check_if_exists(self):
"""Find an installed distribution that satisfies or conflicts
with this requirement, and set self.satisfied_by or
self.conflicts_with appropriately."""
if self.req is None:
return False
try:
self.satisfied_by = pkg_resources.get_distribution(self.req)
except pkg_resources.DistributionNotFound:
return False
except pkg_resources.VersionConflict:
existing_dist = pkg_resources.get_distribution(self.req.project_name)
if self.use_user_site:
if dist_in_usersite(existing_dist):
self.conflicts_with = existing_dist
elif running_under_virtualenv() and dist_in_site_packages(existing_dist):
raise InstallationError("Will not install to the user site because it will lack sys.path precedence to %s in %s"
%(existing_dist.project_name, existing_dist.location))
else:
self.conflicts_with = existing_dist
return True
|
python
|
{
"resource": ""
}
|
q280135
|
process_iter
|
test
|
def process_iter():
"""Return a generator yielding a Process class instance for all
running processes on the local machine.
Every new Process instance is only created once and then cached
into an internal table which is updated every time this is used.
The sorting order in which processes are yielded is based on
their PIDs.
"""
def add(pid):
proc = Process(pid)
_pmap[proc.pid] = proc
return proc
def remove(pid):
_pmap.pop(pid, None)
a = set(get_pid_list())
b = set(_pmap.keys())
new_pids = a - b
gone_pids = b - a
for pid in gone_pids:
remove(pid)
for pid, proc in sorted(list(_pmap.items()) + \
list(dict.fromkeys(new_pids).items())):
try:
if proc is None: # new process
yield add(pid)
else:
# use is_running() to check whether PID has been reused by
# another process in which case yield a new Process instance
if proc.is_running():
yield proc
else:
yield add(pid)
except NoSuchProcess:
remove(pid)
except AccessDenied:
# Process creation time can't be determined hence there's
# no way to tell whether the pid of the cached process
# has been reused. Just return the cached version.
yield proc
|
python
|
{
"resource": ""
}
|
q280136
|
cpu_percent
|
test
|
def cpu_percent(interval=0.1, percpu=False):
"""Return a float representing the current system-wide CPU
utilization as a percentage.
When interval is > 0.0 compares system CPU times elapsed before
and after the interval (blocking).
When interval is 0.0 or None compares system CPU times elapsed
since last call or module import, returning immediately.
In this case is recommended for accuracy that this function be
called with at least 0.1 seconds between calls.
When percpu is True returns a list of floats representing the
utilization as a percentage for each CPU.
First element of the list refers to first CPU, second element
to second CPU and so on.
The order of the list is consistent across calls.
"""
global _last_cpu_times
global _last_per_cpu_times
blocking = interval is not None and interval > 0.0
def calculate(t1, t2):
t1_all = sum(t1)
t1_busy = t1_all - t1.idle
t2_all = sum(t2)
t2_busy = t2_all - t2.idle
# this usually indicates a float precision issue
if t2_busy <= t1_busy:
return 0.0
busy_delta = t2_busy - t1_busy
all_delta = t2_all - t1_all
busy_perc = (busy_delta / all_delta) * 100
return round(busy_perc, 1)
# system-wide usage
if not percpu:
if blocking:
t1 = cpu_times()
time.sleep(interval)
else:
t1 = _last_cpu_times
_last_cpu_times = cpu_times()
return calculate(t1, _last_cpu_times)
# per-cpu usage
else:
ret = []
if blocking:
tot1 = cpu_times(percpu=True)
time.sleep(interval)
else:
tot1 = _last_per_cpu_times
_last_per_cpu_times = cpu_times(percpu=True)
for t1, t2 in zip(tot1, _last_per_cpu_times):
ret.append(calculate(t1, t2))
return ret
|
python
|
{
"resource": ""
}
|
q280137
|
Process.as_dict
|
test
|
def as_dict(self, attrs=[], ad_value=None):
"""Utility method returning process information as a hashable
dictionary.
If 'attrs' is specified it must be a list of strings reflecting
available Process class's attribute names (e.g. ['get_cpu_times',
'name']) else all public (read only) attributes are assumed.
'ad_value' is the value which gets assigned to a dict key in case
AccessDenied exception is raised when retrieving that particular
process information.
"""
excluded_names = set(['send_signal', 'suspend', 'resume', 'terminate',
'kill', 'wait', 'is_running', 'as_dict', 'parent',
'get_children', 'nice'])
retdict = dict()
for name in set(attrs or dir(self)):
if name.startswith('_'):
continue
if name.startswith('set_'):
continue
if name in excluded_names:
continue
try:
attr = getattr(self, name)
if callable(attr):
if name == 'get_cpu_percent':
ret = attr(interval=0)
else:
ret = attr()
else:
ret = attr
except AccessDenied:
ret = ad_value
except NotImplementedError:
# in case of not implemented functionality (may happen
# on old or exotic systems) we want to crash only if
# the user explicitly asked for that particular attr
if attrs:
raise
continue
if name.startswith('get'):
if name[3] == '_':
name = name[4:]
elif name == 'getcwd':
name = 'cwd'
retdict[name] = ret
return retdict
|
python
|
{
"resource": ""
}
|
q280138
|
Process.name
|
test
|
def name(self):
"""The process name."""
name = self._platform_impl.get_process_name()
if os.name == 'posix':
# On UNIX the name gets truncated to the first 15 characters.
# If it matches the first part of the cmdline we return that
# one instead because it's usually more explicative.
# Examples are "gnome-keyring-d" vs. "gnome-keyring-daemon".
try:
cmdline = self.cmdline
except AccessDenied:
pass
else:
if cmdline:
extended_name = os.path.basename(cmdline[0])
if extended_name.startswith(name):
name = extended_name
# XXX - perhaps needs refactoring
self._platform_impl._process_name = name
return name
|
python
|
{
"resource": ""
}
|
q280139
|
Process.exe
|
test
|
def exe(self):
"""The process executable path. May also be an empty string."""
def guess_it(fallback):
# try to guess exe from cmdline[0] in absence of a native
# exe representation
cmdline = self.cmdline
if cmdline and hasattr(os, 'access') and hasattr(os, 'X_OK'):
exe = cmdline[0] # the possible exe
rexe = os.path.realpath(exe) # ...in case it's a symlink
if os.path.isabs(rexe) and os.path.isfile(rexe) \
and os.access(rexe, os.X_OK):
return exe
if isinstance(fallback, AccessDenied):
raise fallback
return fallback
try:
exe = self._platform_impl.get_process_exe()
except AccessDenied:
err = sys.exc_info()[1]
return guess_it(fallback=err)
else:
if not exe:
# underlying implementation can legitimately return an
# empty string; if that's the case we don't want to
# raise AD while guessing from the cmdline
try:
exe = guess_it(fallback=exe)
except AccessDenied:
pass
return exe
|
python
|
{
"resource": ""
}
|
q280140
|
Process.get_children
|
test
|
def get_children(self, recursive=False):
"""Return the children of this process as a list of Process
objects.
If recursive is True return all the parent descendants.
Example (A == this process):
A ─┐
│
├─ B (child) ─┐
│ └─ X (grandchild) ─┐
│ └─ Y (great grandchild)
├─ C (child)
└─ D (child)
>>> p.get_children()
B, C, D
>>> p.get_children(recursive=True)
B, X, Y, C, D
Note that in the example above if process X disappears
process Y won't be returned either as the reference to
process A is lost.
"""
if not self.is_running():
name = self._platform_impl._process_name
raise NoSuchProcess(self.pid, name)
ret = []
if not recursive:
for p in process_iter():
try:
if p.ppid == self.pid:
# if child happens to be older than its parent
# (self) it means child's PID has been reused
if self.create_time <= p.create_time:
ret.append(p)
except NoSuchProcess:
pass
else:
# construct a dict where 'values' are all the processes
# having 'key' as their parent
table = defaultdict(list)
for p in process_iter():
try:
table[p.ppid].append(p)
except NoSuchProcess:
pass
# At this point we have a mapping table where table[self.pid]
# are the current process's children.
# Below, we look for all descendants recursively, similarly
# to a recursive function call.
checkpids = [self.pid]
for pid in checkpids:
for child in table[pid]:
try:
# if child happens to be older than its parent
# (self) it means child's PID has been reused
intime = self.create_time <= child.create_time
except NoSuchProcess:
pass
else:
if intime:
ret.append(child)
if child.pid not in checkpids:
checkpids.append(child.pid)
return ret
|
python
|
{
"resource": ""
}
|
q280141
|
Process.get_cpu_percent
|
test
|
def get_cpu_percent(self, interval=0.1):
"""Return a float representing the current process CPU
utilization as a percentage.
When interval is > 0.0 compares process times to system CPU
times elapsed before and after the interval (blocking).
When interval is 0.0 or None compares process times to system CPU
times elapsed since last call, returning immediately.
In this case is recommended for accuracy that this function be
called with at least 0.1 seconds between calls.
"""
blocking = interval is not None and interval > 0.0
if blocking:
st1 = sum(cpu_times())
pt1 = self._platform_impl.get_cpu_times()
time.sleep(interval)
st2 = sum(cpu_times())
pt2 = self._platform_impl.get_cpu_times()
else:
st1 = self._last_sys_cpu_times
pt1 = self._last_proc_cpu_times
st2 = sum(cpu_times())
pt2 = self._platform_impl.get_cpu_times()
if st1 is None or pt1 is None:
self._last_sys_cpu_times = st2
self._last_proc_cpu_times = pt2
return 0.0
delta_proc = (pt2.user - pt1.user) + (pt2.system - pt1.system)
delta_time = st2 - st1
# reset values for next call in case of interval == None
self._last_sys_cpu_times = st2
self._last_proc_cpu_times = pt2
try:
# the utilization split between all CPUs
overall_percent = (delta_proc / delta_time) * 100
except ZeroDivisionError:
# interval was too low
return 0.0
# the utilization of a single CPU
single_cpu_percent = overall_percent * NUM_CPUS
# on posix a percentage > 100 is legitimate
# http://stackoverflow.com/questions/1032357/comprehending-top-cpu-usage
# on windows we use this ugly hack to avoid troubles with float
# precision issues
if os.name != 'posix':
if single_cpu_percent > 100.0:
return 100.0
return round(single_cpu_percent, 1)
|
python
|
{
"resource": ""
}
|
q280142
|
Process.get_memory_percent
|
test
|
def get_memory_percent(self):
"""Compare physical system memory to process resident memory and
calculate process memory utilization as a percentage.
"""
rss = self._platform_impl.get_memory_info()[0]
try:
return (rss / float(TOTAL_PHYMEM)) * 100
except ZeroDivisionError:
return 0.0
|
python
|
{
"resource": ""
}
|
q280143
|
Process.get_memory_maps
|
test
|
def get_memory_maps(self, grouped=True):
"""Return process's mapped memory regions as a list of nameduples
whose fields are variable depending on the platform.
If 'grouped' is True the mapped regions with the same 'path'
are grouped together and the different memory fields are summed.
If 'grouped' is False every mapped region is shown as a single
entity and the namedtuple will also include the mapped region's
address space ('addr') and permission set ('perms').
"""
it = self._platform_impl.get_memory_maps()
if grouped:
d = {}
for tupl in it:
path = tupl[2]
nums = tupl[3:]
try:
d[path] = map(lambda x, y: x+y, d[path], nums)
except KeyError:
d[path] = nums
nt = self._platform_impl.nt_mmap_grouped
return [nt(path, *d[path]) for path in d]
else:
nt = self._platform_impl.nt_mmap_ext
return [nt(*x) for x in it]
|
python
|
{
"resource": ""
}
|
q280144
|
Process.is_running
|
test
|
def is_running(self):
"""Return whether this process is running."""
if self._gone:
return False
try:
# Checking if pid is alive is not enough as the pid might
# have been reused by another process.
# pid + creation time, on the other hand, is supposed to
# identify a process univocally.
return self.create_time == \
self._platform_impl.get_process_create_time()
except NoSuchProcess:
self._gone = True
return False
|
python
|
{
"resource": ""
}
|
q280145
|
Process.suspend
|
test
|
def suspend(self):
"""Suspend process execution."""
# safety measure in case the current process has been killed in
# meantime and the kernel reused its PID
if not self.is_running():
name = self._platform_impl._process_name
raise NoSuchProcess(self.pid, name)
# windows
if hasattr(self._platform_impl, "suspend_process"):
self._platform_impl.suspend_process()
else:
# posix
self.send_signal(signal.SIGSTOP)
|
python
|
{
"resource": ""
}
|
q280146
|
Process.resume
|
test
|
def resume(self):
"""Resume process execution."""
# safety measure in case the current process has been killed in
# meantime and the kernel reused its PID
if not self.is_running():
name = self._platform_impl._process_name
raise NoSuchProcess(self.pid, name)
# windows
if hasattr(self._platform_impl, "resume_process"):
self._platform_impl.resume_process()
else:
# posix
self.send_signal(signal.SIGCONT)
|
python
|
{
"resource": ""
}
|
q280147
|
Process.kill
|
test
|
def kill(self):
"""Kill the current process."""
# safety measure in case the current process has been killed in
# meantime and the kernel reused its PID
if not self.is_running():
name = self._platform_impl._process_name
raise NoSuchProcess(self.pid, name)
if os.name == 'posix':
self.send_signal(signal.SIGKILL)
else:
self._platform_impl.kill_process()
|
python
|
{
"resource": ""
}
|
q280148
|
Process.wait
|
test
|
def wait(self, timeout=None):
"""Wait for process to terminate and, if process is a children
of the current one also return its exit code, else None.
"""
if timeout is not None and not timeout >= 0:
raise ValueError("timeout must be a positive integer")
return self._platform_impl.process_wait(timeout)
|
python
|
{
"resource": ""
}
|
q280149
|
GTKEmbed._wire_kernel
|
test
|
def _wire_kernel(self):
"""Initializes the kernel inside GTK.
This is meant to run only once at startup, so it does its job and
returns False to ensure it doesn't get run again by GTK.
"""
self.gtk_main, self.gtk_main_quit = self._hijack_gtk()
gobject.timeout_add(int(1000*self.kernel._poll_interval),
self.iterate_kernel)
return False
|
python
|
{
"resource": ""
}
|
q280150
|
GTKEmbed._hijack_gtk
|
test
|
def _hijack_gtk(self):
"""Hijack a few key functions in GTK for IPython integration.
Modifies pyGTK's main and main_quit with a dummy so user code does not
block IPython. This allows us to use %run to run arbitrary pygtk
scripts from a long-lived IPython session, and when they attempt to
start or stop
Returns
-------
The original functions that have been hijacked:
- gtk.main
- gtk.main_quit
"""
def dummy(*args, **kw):
pass
# save and trap main and main_quit from gtk
orig_main, gtk.main = gtk.main, dummy
orig_main_quit, gtk.main_quit = gtk.main_quit, dummy
return orig_main, orig_main_quit
|
python
|
{
"resource": ""
}
|
q280151
|
is_shadowed
|
test
|
def is_shadowed(identifier, ip):
"""Is the given identifier defined in one of the namespaces which shadow
the alias and magic namespaces? Note that an identifier is different
than ifun, because it can not contain a '.' character."""
# This is much safer than calling ofind, which can change state
return (identifier in ip.user_ns \
or identifier in ip.user_global_ns \
or identifier in ip.ns_table['builtin'])
|
python
|
{
"resource": ""
}
|
q280152
|
PrefilterManager.init_transformers
|
test
|
def init_transformers(self):
"""Create the default transformers."""
self._transformers = []
for transformer_cls in _default_transformers:
transformer_cls(
shell=self.shell, prefilter_manager=self, config=self.config
)
|
python
|
{
"resource": ""
}
|
q280153
|
PrefilterManager.register_transformer
|
test
|
def register_transformer(self, transformer):
"""Register a transformer instance."""
if transformer not in self._transformers:
self._transformers.append(transformer)
self.sort_transformers()
|
python
|
{
"resource": ""
}
|
q280154
|
PrefilterManager.unregister_transformer
|
test
|
def unregister_transformer(self, transformer):
"""Unregister a transformer instance."""
if transformer in self._transformers:
self._transformers.remove(transformer)
|
python
|
{
"resource": ""
}
|
q280155
|
PrefilterManager.init_checkers
|
test
|
def init_checkers(self):
"""Create the default checkers."""
self._checkers = []
for checker in _default_checkers:
checker(
shell=self.shell, prefilter_manager=self, config=self.config
)
|
python
|
{
"resource": ""
}
|
q280156
|
PrefilterManager.register_checker
|
test
|
def register_checker(self, checker):
"""Register a checker instance."""
if checker not in self._checkers:
self._checkers.append(checker)
self.sort_checkers()
|
python
|
{
"resource": ""
}
|
q280157
|
PrefilterManager.unregister_checker
|
test
|
def unregister_checker(self, checker):
"""Unregister a checker instance."""
if checker in self._checkers:
self._checkers.remove(checker)
|
python
|
{
"resource": ""
}
|
q280158
|
PrefilterManager.init_handlers
|
test
|
def init_handlers(self):
"""Create the default handlers."""
self._handlers = {}
self._esc_handlers = {}
for handler in _default_handlers:
handler(
shell=self.shell, prefilter_manager=self, config=self.config
)
|
python
|
{
"resource": ""
}
|
q280159
|
PrefilterManager.register_handler
|
test
|
def register_handler(self, name, handler, esc_strings):
"""Register a handler instance by name with esc_strings."""
self._handlers[name] = handler
for esc_str in esc_strings:
self._esc_handlers[esc_str] = handler
|
python
|
{
"resource": ""
}
|
q280160
|
PrefilterManager.unregister_handler
|
test
|
def unregister_handler(self, name, handler, esc_strings):
"""Unregister a handler instance by name with esc_strings."""
try:
del self._handlers[name]
except KeyError:
pass
for esc_str in esc_strings:
h = self._esc_handlers.get(esc_str)
if h is handler:
del self._esc_handlers[esc_str]
|
python
|
{
"resource": ""
}
|
q280161
|
PrefilterManager.prefilter_line_info
|
test
|
def prefilter_line_info(self, line_info):
"""Prefilter a line that has been converted to a LineInfo object.
This implements the checker/handler part of the prefilter pipe.
"""
# print "prefilter_line_info: ", line_info
handler = self.find_handler(line_info)
return handler.handle(line_info)
|
python
|
{
"resource": ""
}
|
q280162
|
PrefilterManager.find_handler
|
test
|
def find_handler(self, line_info):
"""Find a handler for the line_info by trying checkers."""
for checker in self.checkers:
if checker.enabled:
handler = checker.check(line_info)
if handler:
return handler
return self.get_handler_by_name('normal')
|
python
|
{
"resource": ""
}
|
q280163
|
PrefilterManager.transform_line
|
test
|
def transform_line(self, line, continue_prompt):
"""Calls the enabled transformers in order of increasing priority."""
for transformer in self.transformers:
if transformer.enabled:
line = transformer.transform(line, continue_prompt)
return line
|
python
|
{
"resource": ""
}
|
q280164
|
PrefilterManager.prefilter_line
|
test
|
def prefilter_line(self, line, continue_prompt=False):
"""Prefilter a single input line as text.
This method prefilters a single line of text by calling the
transformers and then the checkers/handlers.
"""
# print "prefilter_line: ", line, continue_prompt
# All handlers *must* return a value, even if it's blank ('').
# save the line away in case we crash, so the post-mortem handler can
# record it
self.shell._last_input_line = line
if not line:
# Return immediately on purely empty lines, so that if the user
# previously typed some whitespace that started a continuation
# prompt, he can break out of that loop with just an empty line.
# This is how the default python prompt works.
return ''
# At this point, we invoke our transformers.
if not continue_prompt or (continue_prompt and self.multi_line_specials):
line = self.transform_line(line, continue_prompt)
# Now we compute line_info for the checkers and handlers
line_info = LineInfo(line, continue_prompt)
# the input history needs to track even empty lines
stripped = line.strip()
normal_handler = self.get_handler_by_name('normal')
if not stripped:
if not continue_prompt:
self.shell.displayhook.prompt_count -= 1
return normal_handler.handle(line_info)
# special handlers are only allowed for single line statements
if continue_prompt and not self.multi_line_specials:
return normal_handler.handle(line_info)
prefiltered = self.prefilter_line_info(line_info)
# print "prefiltered line: %r" % prefiltered
return prefiltered
|
python
|
{
"resource": ""
}
|
q280165
|
PrefilterManager.prefilter_lines
|
test
|
def prefilter_lines(self, lines, continue_prompt=False):
"""Prefilter multiple input lines of text.
This is the main entry point for prefiltering multiple lines of
input. This simply calls :meth:`prefilter_line` for each line of
input.
This covers cases where there are multiple lines in the user entry,
which is the case when the user goes back to a multiline history
entry and presses enter.
"""
llines = lines.rstrip('\n').split('\n')
# We can get multiple lines in one shot, where multiline input 'blends'
# into one line, in cases like recalling from the readline history
# buffer. We need to make sure that in such cases, we correctly
# communicate downstream which line is first and which are continuation
# ones.
if len(llines) > 1:
out = '\n'.join([self.prefilter_line(line, lnum>0)
for lnum, line in enumerate(llines) ])
else:
out = self.prefilter_line(llines[0], continue_prompt)
return out
|
python
|
{
"resource": ""
}
|
q280166
|
IPyAutocallChecker.check
|
test
|
def check(self, line_info):
"Instances of IPyAutocall in user_ns get autocalled immediately"
obj = self.shell.user_ns.get(line_info.ifun, None)
if isinstance(obj, IPyAutocall):
obj.set_ip(self.shell)
return self.prefilter_manager.get_handler_by_name('auto')
else:
return None
|
python
|
{
"resource": ""
}
|
q280167
|
MultiLineMagicChecker.check
|
test
|
def check(self, line_info):
"Allow ! and !! in multi-line statements if multi_line_specials is on"
# Note that this one of the only places we check the first character of
# ifun and *not* the pre_char. Also note that the below test matches
# both ! and !!.
if line_info.continue_prompt \
and self.prefilter_manager.multi_line_specials:
if line_info.esc == ESC_MAGIC:
return self.prefilter_manager.get_handler_by_name('magic')
else:
return None
|
python
|
{
"resource": ""
}
|
q280168
|
EscCharsChecker.check
|
test
|
def check(self, line_info):
"""Check for escape character and return either a handler to handle it,
or None if there is no escape char."""
if line_info.line[-1] == ESC_HELP \
and line_info.esc != ESC_SHELL \
and line_info.esc != ESC_SH_CAP:
# the ? can be at the end, but *not* for either kind of shell escape,
# because a ? can be a vaild final char in a shell cmd
return self.prefilter_manager.get_handler_by_name('help')
else:
if line_info.pre:
return None
# This returns None like it should if no handler exists
return self.prefilter_manager.get_handler_by_esc(line_info.esc)
|
python
|
{
"resource": ""
}
|
q280169
|
AliasChecker.check
|
test
|
def check(self, line_info):
"Check if the initital identifier on the line is an alias."
# Note: aliases can not contain '.'
head = line_info.ifun.split('.',1)[0]
if line_info.ifun not in self.shell.alias_manager \
or head not in self.shell.alias_manager \
or is_shadowed(head, self.shell):
return None
return self.prefilter_manager.get_handler_by_name('alias')
|
python
|
{
"resource": ""
}
|
q280170
|
PrefilterHandler.handle
|
test
|
def handle(self, line_info):
# print "normal: ", line_info
"""Handle normal input lines. Use as a template for handlers."""
# With autoindent on, we need some way to exit the input loop, and I
# don't want to force the user to have to backspace all the way to
# clear the line. The rule will be in this case, that either two
# lines of pure whitespace in a row, or a line of pure whitespace but
# of a size different to the indent level, will exit the input loop.
line = line_info.line
continue_prompt = line_info.continue_prompt
if (continue_prompt and
self.shell.autoindent and
line.isspace() and
0 < abs(len(line) - self.shell.indent_current_nsp) <= 2):
line = ''
return line
|
python
|
{
"resource": ""
}
|
q280171
|
AliasHandler.handle
|
test
|
def handle(self, line_info):
"""Handle alias input lines. """
transformed = self.shell.alias_manager.expand_aliases(line_info.ifun,line_info.the_rest)
# pre is needed, because it carries the leading whitespace. Otherwise
# aliases won't work in indented sections.
line_out = '%sget_ipython().system(%r)' % (line_info.pre_whitespace, transformed)
return line_out
|
python
|
{
"resource": ""
}
|
q280172
|
ShellEscapeHandler.handle
|
test
|
def handle(self, line_info):
"""Execute the line in a shell, empty return value"""
magic_handler = self.prefilter_manager.get_handler_by_name('magic')
line = line_info.line
if line.lstrip().startswith(ESC_SH_CAP):
# rewrite LineInfo's line, ifun and the_rest to properly hold the
# call to %sx and the actual command to be executed, so
# handle_magic can work correctly. Note that this works even if
# the line is indented, so it handles multi_line_specials
# properly.
new_rest = line.lstrip()[2:]
line_info.line = '%ssx %s' % (ESC_MAGIC, new_rest)
line_info.ifun = 'sx'
line_info.the_rest = new_rest
return magic_handler.handle(line_info)
else:
cmd = line.lstrip().lstrip(ESC_SHELL)
line_out = '%sget_ipython().system(%r)' % (line_info.pre_whitespace, cmd)
return line_out
|
python
|
{
"resource": ""
}
|
q280173
|
MagicHandler.handle
|
test
|
def handle(self, line_info):
"""Execute magic functions."""
ifun = line_info.ifun
the_rest = line_info.the_rest
cmd = '%sget_ipython().magic(%r)' % (line_info.pre_whitespace,
(ifun + " " + the_rest))
return cmd
|
python
|
{
"resource": ""
}
|
q280174
|
AutoHandler.handle
|
test
|
def handle(self, line_info):
"""Handle lines which can be auto-executed, quoting if requested."""
line = line_info.line
ifun = line_info.ifun
the_rest = line_info.the_rest
pre = line_info.pre
esc = line_info.esc
continue_prompt = line_info.continue_prompt
obj = line_info.ofind(self.shell)['obj']
#print 'pre <%s> ifun <%s> rest <%s>' % (pre,ifun,the_rest) # dbg
# This should only be active for single-line input!
if continue_prompt:
return line
force_auto = isinstance(obj, IPyAutocall)
# User objects sometimes raise exceptions on attribute access other
# than AttributeError (we've seen it in the past), so it's safest to be
# ultra-conservative here and catch all.
try:
auto_rewrite = obj.rewrite
except Exception:
auto_rewrite = True
if esc == ESC_QUOTE:
# Auto-quote splitting on whitespace
newcmd = '%s("%s")' % (ifun,'", "'.join(the_rest.split()) )
elif esc == ESC_QUOTE2:
# Auto-quote whole string
newcmd = '%s("%s")' % (ifun,the_rest)
elif esc == ESC_PAREN:
newcmd = '%s(%s)' % (ifun,",".join(the_rest.split()))
else:
# Auto-paren.
if force_auto:
# Don't rewrite if it is already a call.
do_rewrite = not the_rest.startswith('(')
else:
if not the_rest:
# We only apply it to argument-less calls if the autocall
# parameter is set to 2.
do_rewrite = (self.shell.autocall >= 2)
elif the_rest.startswith('[') and hasattr(obj, '__getitem__'):
# Don't autocall in this case: item access for an object
# which is BOTH callable and implements __getitem__.
do_rewrite = False
else:
do_rewrite = True
# Figure out the rewritten command
if do_rewrite:
if the_rest.endswith(';'):
newcmd = '%s(%s);' % (ifun.rstrip(),the_rest[:-1])
else:
newcmd = '%s(%s)' % (ifun.rstrip(), the_rest)
else:
normal_handler = self.prefilter_manager.get_handler_by_name('normal')
return normal_handler.handle(line_info)
# Display the rewritten call
if auto_rewrite:
self.shell.auto_rewrite_input(newcmd)
return newcmd
|
python
|
{
"resource": ""
}
|
q280175
|
HelpHandler.handle
|
test
|
def handle(self, line_info):
"""Try to get some help for the object.
obj? or ?obj -> basic information.
obj?? or ??obj -> more details.
"""
normal_handler = self.prefilter_manager.get_handler_by_name('normal')
line = line_info.line
# We need to make sure that we don't process lines which would be
# otherwise valid python, such as "x=1 # what?"
try:
codeop.compile_command(line)
except SyntaxError:
# We should only handle as help stuff which is NOT valid syntax
if line[0]==ESC_HELP:
line = line[1:]
elif line[-1]==ESC_HELP:
line = line[:-1]
if line:
#print 'line:<%r>' % line # dbg
self.shell.magic('pinfo %s' % line_info.ifun)
else:
self.shell.show_usage()
return '' # Empty string is needed here!
except:
raise
# Pass any other exceptions through to the normal handler
return normal_handler.handle(line_info)
else:
# If the code compiles ok, we should handle it normally
return normal_handler.handle(line_info)
|
python
|
{
"resource": ""
}
|
q280176
|
CallTipWidget.eventFilter
|
test
|
def eventFilter(self, obj, event):
""" Reimplemented to hide on certain key presses and on text edit focus
changes.
"""
if obj == self._text_edit:
etype = event.type()
if etype == QtCore.QEvent.KeyPress:
key = event.key()
if key in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return):
self.hide()
elif key == QtCore.Qt.Key_Escape:
self.hide()
return True
elif etype == QtCore.QEvent.FocusOut:
self.hide()
elif etype == QtCore.QEvent.Enter:
self._hide_timer.stop()
elif etype == QtCore.QEvent.Leave:
self._leave_event_hide()
return super(CallTipWidget, self).eventFilter(obj, event)
|
python
|
{
"resource": ""
}
|
q280177
|
CallTipWidget.enterEvent
|
test
|
def enterEvent(self, event):
""" Reimplemented to cancel the hide timer.
"""
super(CallTipWidget, self).enterEvent(event)
self._hide_timer.stop()
|
python
|
{
"resource": ""
}
|
q280178
|
CallTipWidget.paintEvent
|
test
|
def paintEvent(self, event):
""" Reimplemented to paint the background panel.
"""
painter = QtGui.QStylePainter(self)
option = QtGui.QStyleOptionFrame()
option.initFrom(self)
painter.drawPrimitive(QtGui.QStyle.PE_PanelTipLabel, option)
painter.end()
super(CallTipWidget, self).paintEvent(event)
|
python
|
{
"resource": ""
}
|
q280179
|
CallTipWidget.show_call_info
|
test
|
def show_call_info(self, call_line=None, doc=None, maxlines=20):
""" Attempts to show the specified call line and docstring at the
current cursor location. The docstring is possibly truncated for
length.
"""
if doc:
match = re.match("(?:[^\n]*\n){%i}" % maxlines, doc)
if match:
doc = doc[:match.end()] + '\n[Documentation continues...]'
else:
doc = ''
if call_line:
doc = '\n\n'.join([call_line, doc])
return self.show_tip(doc)
|
python
|
{
"resource": ""
}
|
q280180
|
CallTipWidget.show_tip
|
test
|
def show_tip(self, tip):
""" Attempts to show the specified tip at the current cursor location.
"""
# Attempt to find the cursor position at which to show the call tip.
text_edit = self._text_edit
document = text_edit.document()
cursor = text_edit.textCursor()
search_pos = cursor.position() - 1
self._start_position, _ = self._find_parenthesis(search_pos,
forward=False)
if self._start_position == -1:
return False
# Set the text and resize the widget accordingly.
self.setText(tip)
self.resize(self.sizeHint())
# Locate and show the widget. Place the tip below the current line
# unless it would be off the screen. In that case, decide the best
# location based trying to minimize the area that goes off-screen.
padding = 3 # Distance in pixels between cursor bounds and tip box.
cursor_rect = text_edit.cursorRect(cursor)
screen_rect = QtGui.qApp.desktop().screenGeometry(text_edit)
point = text_edit.mapToGlobal(cursor_rect.bottomRight())
point.setY(point.y() + padding)
tip_height = self.size().height()
tip_width = self.size().width()
vertical = 'bottom'
horizontal = 'Right'
if point.y() + tip_height > screen_rect.height():
point_ = text_edit.mapToGlobal(cursor_rect.topRight())
# If tip is still off screen, check if point is in top or bottom
# half of screen.
if point_.y() - tip_height < padding:
# If point is in upper half of screen, show tip below it.
# otherwise above it.
if 2*point.y() < screen_rect.height():
vertical = 'bottom'
else:
vertical = 'top'
else:
vertical = 'top'
if point.x() + tip_width > screen_rect.width():
point_ = text_edit.mapToGlobal(cursor_rect.topRight())
# If tip is still off-screen, check if point is in the right or
# left half of the screen.
if point_.x() - tip_width < padding:
if 2*point.x() < screen_rect.width():
horizontal = 'Right'
else:
horizontal = 'Left'
else:
horizontal = 'Left'
pos = getattr(cursor_rect, '%s%s' %(vertical, horizontal))
point = text_edit.mapToGlobal(pos())
if vertical == 'top':
point.setY(point.y() - tip_height - padding)
if horizontal == 'Left':
point.setX(point.x() - tip_width - padding)
self.move(point)
self.show()
return True
|
python
|
{
"resource": ""
}
|
q280181
|
CallTipWidget._cursor_position_changed
|
test
|
def _cursor_position_changed(self):
""" Updates the tip based on user cursor movement.
"""
cursor = self._text_edit.textCursor()
if cursor.position() <= self._start_position:
self.hide()
else:
position, commas = self._find_parenthesis(self._start_position + 1)
if position != -1:
self.hide()
|
python
|
{
"resource": ""
}
|
q280182
|
proxied_attribute
|
test
|
def proxied_attribute(local_attr, proxied_attr, doc):
"""Create a property that proxies attribute ``proxied_attr`` through
the local attribute ``local_attr``.
"""
def fget(self):
return getattr(getattr(self, local_attr), proxied_attr)
def fset(self, value):
setattr(getattr(self, local_attr), proxied_attr, value)
def fdel(self):
delattr(getattr(self, local_attr), proxied_attr)
return property(fget, fset, fdel, doc)
|
python
|
{
"resource": ""
}
|
q280183
|
canonicalize_path
|
test
|
def canonicalize_path(cwd, path):
"""
Canonicalizes a path relative to a given working directory. That
is, the path, if not absolute, is interpreted relative to the
working directory, then converted to absolute form.
:param cwd: The working directory.
:param path: The path to canonicalize.
:returns: The absolute path.
"""
if not os.path.isabs(path):
path = os.path.join(cwd, path)
return os.path.abspath(path)
|
python
|
{
"resource": ""
}
|
q280184
|
schema_validate
|
test
|
def schema_validate(instance, schema, exc_class, *prefix, **kwargs):
"""
Schema validation helper. Performs JSONSchema validation. If a
schema validation error is encountered, an exception of the
designated class is raised with the validation error message
appropriately simplified and passed as the sole positional
argument.
:param instance: The object to schema validate.
:param schema: The schema to use for validation.
:param exc_class: The exception class to raise instead of the
``jsonschema.ValidationError`` exception.
:param prefix: Positional arguments are interpreted as a list of
keys to prefix to the path contained in the
validation error.
:param kwargs: Keyword arguments to pass to the exception
constructor.
"""
try:
# Do the validation
jsonschema.validate(instance, schema)
except jsonschema.ValidationError as exc:
# Assemble the path
path = '/'.join((a if isinstance(a, six.string_types) else '[%d]' % a)
for a in itertools.chain(prefix, exc.path))
# Construct the message
message = 'Failed to validate "%s": %s' % (path, exc.message)
# Raise the target exception
raise exc_class(message, **kwargs)
|
python
|
{
"resource": ""
}
|
q280185
|
SensitiveDict.masked
|
test
|
def masked(self):
"""
Retrieve a read-only subordinate mapping. All values are
stringified, and sensitive values are masked. The subordinate
mapping implements the context manager protocol for
convenience.
"""
if self._masked is None:
self._masked = MaskedDict(self)
return self._masked
|
python
|
{
"resource": ""
}
|
q280186
|
virtualenv_no_global
|
test
|
def virtualenv_no_global():
"""
Return True if in a venv and no system site packages.
"""
#this mirrors the logic in virtualenv.py for locating the no-global-site-packages.txt file
site_mod_dir = os.path.dirname(os.path.abspath(site.__file__))
no_global_file = os.path.join(site_mod_dir, 'no-global-site-packages.txt')
if running_under_virtualenv() and os.path.isfile(no_global_file):
return True
|
python
|
{
"resource": ""
}
|
q280187
|
pwordfreq
|
test
|
def pwordfreq(view, fnames):
"""Parallel word frequency counter.
view - An IPython DirectView
fnames - The filenames containing the split data.
"""
assert len(fnames) == len(view.targets)
view.scatter('fname', fnames, flatten=True)
ar = view.apply(wordfreq, Reference('fname'))
freqs_list = ar.get()
word_set = set()
for f in freqs_list:
word_set.update(f.keys())
freqs = dict(zip(word_set, repeat(0)))
for f in freqs_list:
for word, count in f.iteritems():
freqs[word] += count
return freqs
|
python
|
{
"resource": ""
}
|
q280188
|
view_decorator
|
test
|
def view_decorator(function_decorator):
"""Convert a function based decorator into a class based decorator usable
on class based Views.
Can't subclass the `View` as it breaks inheritance (super in particular),
so we monkey-patch instead.
Based on http://stackoverflow.com/a/8429311
"""
def simple_decorator(View):
View.dispatch = method_decorator(function_decorator)(View.dispatch)
return View
return simple_decorator
|
python
|
{
"resource": ""
}
|
q280189
|
default_aliases
|
test
|
def default_aliases():
"""Return list of shell aliases to auto-define.
"""
# Note: the aliases defined here should be safe to use on a kernel
# regardless of what frontend it is attached to. Frontends that use a
# kernel in-process can define additional aliases that will only work in
# their case. For example, things like 'less' or 'clear' that manipulate
# the terminal should NOT be declared here, as they will only work if the
# kernel is running inside a true terminal, and not over the network.
if os.name == 'posix':
default_aliases = [('mkdir', 'mkdir'), ('rmdir', 'rmdir'),
('mv', 'mv -i'), ('rm', 'rm -i'), ('cp', 'cp -i'),
('cat', 'cat'),
]
# Useful set of ls aliases. The GNU and BSD options are a little
# different, so we make aliases that provide as similar as possible
# behavior in ipython, by passing the right flags for each platform
if sys.platform.startswith('linux'):
ls_aliases = [('ls', 'ls -F --color'),
# long ls
('ll', 'ls -F -o --color'),
# ls normal files only
('lf', 'ls -F -o --color %l | grep ^-'),
# ls symbolic links
('lk', 'ls -F -o --color %l | grep ^l'),
# directories or links to directories,
('ldir', 'ls -F -o --color %l | grep /$'),
# things which are executable
('lx', 'ls -F -o --color %l | grep ^-..x'),
]
else:
# BSD, OSX, etc.
ls_aliases = [('ls', 'ls -F'),
# long ls
('ll', 'ls -F -l'),
# ls normal files only
('lf', 'ls -F -l %l | grep ^-'),
# ls symbolic links
('lk', 'ls -F -l %l | grep ^l'),
# directories or links to directories,
('ldir', 'ls -F -l %l | grep /$'),
# things which are executable
('lx', 'ls -F -l %l | grep ^-..x'),
]
default_aliases = default_aliases + ls_aliases
elif os.name in ['nt', 'dos']:
default_aliases = [('ls', 'dir /on'),
('ddir', 'dir /ad /on'), ('ldir', 'dir /ad /on'),
('mkdir', 'mkdir'), ('rmdir', 'rmdir'),
('echo', 'echo'), ('ren', 'ren'), ('copy', 'copy'),
]
else:
default_aliases = []
return default_aliases
|
python
|
{
"resource": ""
}
|
q280190
|
AliasManager.soft_define_alias
|
test
|
def soft_define_alias(self, name, cmd):
"""Define an alias, but don't raise on an AliasError."""
try:
self.define_alias(name, cmd)
except AliasError, e:
error("Invalid alias: %s" % e)
|
python
|
{
"resource": ""
}
|
q280191
|
AliasManager.define_alias
|
test
|
def define_alias(self, name, cmd):
"""Define a new alias after validating it.
This will raise an :exc:`AliasError` if there are validation
problems.
"""
nargs = self.validate_alias(name, cmd)
self.alias_table[name] = (nargs, cmd)
|
python
|
{
"resource": ""
}
|
q280192
|
AliasManager.validate_alias
|
test
|
def validate_alias(self, name, cmd):
"""Validate an alias and return the its number of arguments."""
if name in self.no_alias:
raise InvalidAliasError("The name %s can't be aliased "
"because it is a keyword or builtin." % name)
if not (isinstance(cmd, basestring)):
raise InvalidAliasError("An alias command must be a string, "
"got: %r" % cmd)
nargs = cmd.count('%s')
if nargs>0 and cmd.find('%l')>=0:
raise InvalidAliasError('The %s and %l specifiers are mutually '
'exclusive in alias definitions.')
return nargs
|
python
|
{
"resource": ""
}
|
q280193
|
AliasManager.call_alias
|
test
|
def call_alias(self, alias, rest=''):
"""Call an alias given its name and the rest of the line."""
cmd = self.transform_alias(alias, rest)
try:
self.shell.system(cmd)
except:
self.shell.showtraceback()
|
python
|
{
"resource": ""
}
|
q280194
|
AliasManager.transform_alias
|
test
|
def transform_alias(self, alias,rest=''):
"""Transform alias to system command string."""
nargs, cmd = self.alias_table[alias]
if ' ' in cmd and os.path.isfile(cmd):
cmd = '"%s"' % cmd
# Expand the %l special to be the user's input line
if cmd.find('%l') >= 0:
cmd = cmd.replace('%l', rest)
rest = ''
if nargs==0:
# Simple, argument-less aliases
cmd = '%s %s' % (cmd, rest)
else:
# Handle aliases with positional arguments
args = rest.split(None, nargs)
if len(args) < nargs:
raise AliasError('Alias <%s> requires %s arguments, %s given.' %
(alias, nargs, len(args)))
cmd = '%s %s' % (cmd % tuple(args[:nargs]),' '.join(args[nargs:]))
return cmd
|
python
|
{
"resource": ""
}
|
q280195
|
AliasManager.expand_alias
|
test
|
def expand_alias(self, line):
""" Expand an alias in the command line
Returns the provided command line, possibly with the first word
(command) translated according to alias expansion rules.
[ipython]|16> _ip.expand_aliases("np myfile.txt")
<16> 'q:/opt/np/notepad++.exe myfile.txt'
"""
pre,_,fn,rest = split_user_input(line)
res = pre + self.expand_aliases(fn, rest)
return res
|
python
|
{
"resource": ""
}
|
q280196
|
autohelp_directive
|
test
|
def autohelp_directive(dirname, arguments, options, content, lineno,
content_offset, block_text, state, state_machine):
"""produces rst from nose help"""
config = Config(parserClass=OptBucket,
plugins=BuiltinPluginManager())
parser = config.getParser(TestProgram.usage())
rst = ViewList()
for line in parser.format_help().split('\n'):
rst.append(line, '<autodoc>')
rst.append('Options', '<autodoc>')
rst.append('-------', '<autodoc>')
rst.append('', '<autodoc>')
for opt in parser:
rst.append(opt.options(), '<autodoc>')
rst.append(' \n', '<autodoc>')
rst.append(' ' + opt.help + '\n', '<autodoc>')
rst.append('\n', '<autodoc>')
node = nodes.section()
node.document = state.document
surrounding_title_styles = state.memo.title_styles
surrounding_section_level = state.memo.section_level
state.memo.title_styles = []
state.memo.section_level = 0
state.nested_parse(rst, 0, node, match_titles=1)
state.memo.title_styles = surrounding_title_styles
state.memo.section_level = surrounding_section_level
return node.children
|
python
|
{
"resource": ""
}
|
q280197
|
AnsiCodeProcessor.reset_sgr
|
test
|
def reset_sgr(self):
""" Reset graphics attributs to their default values.
"""
self.intensity = 0
self.italic = False
self.bold = False
self.underline = False
self.foreground_color = None
self.background_color = None
|
python
|
{
"resource": ""
}
|
q280198
|
AnsiCodeProcessor.split_string
|
test
|
def split_string(self, string):
""" Yields substrings for which the same escape code applies.
"""
self.actions = []
start = 0
# strings ending with \r are assumed to be ending in \r\n since
# \n is appended to output strings automatically. Accounting
# for that, here.
last_char = '\n' if len(string) > 0 and string[-1] == '\n' else None
string = string[:-1] if last_char is not None else string
for match in ANSI_OR_SPECIAL_PATTERN.finditer(string):
raw = string[start:match.start()]
substring = SPECIAL_PATTERN.sub(self._replace_special, raw)
if substring or self.actions:
yield substring
self.actions = []
start = match.end()
groups = filter(lambda x: x is not None, match.groups())
g0 = groups[0]
if g0 == '\a':
self.actions.append(BeepAction('beep'))
yield None
self.actions = []
elif g0 == '\r':
self.actions.append(CarriageReturnAction('carriage-return'))
yield None
self.actions = []
elif g0 == '\b':
self.actions.append(BackSpaceAction('backspace'))
yield None
self.actions = []
elif g0 == '\n' or g0 == '\r\n':
self.actions.append(NewLineAction('newline'))
yield g0
self.actions = []
else:
params = [ param for param in groups[1].split(';') if param ]
if g0.startswith('['):
# Case 1: CSI code.
try:
params = map(int, params)
except ValueError:
# Silently discard badly formed codes.
pass
else:
self.set_csi_code(groups[2], params)
elif g0.startswith(']'):
# Case 2: OSC code.
self.set_osc_code(params)
raw = string[start:]
substring = SPECIAL_PATTERN.sub(self._replace_special, raw)
if substring or self.actions:
yield substring
if last_char is not None:
self.actions.append(NewLineAction('newline'))
yield last_char
|
python
|
{
"resource": ""
}
|
q280199
|
QtAnsiCodeProcessor.get_color
|
test
|
def get_color(self, color, intensity=0):
""" Returns a QColor for a given color code, or None if one cannot be
constructed.
"""
if color is None:
return None
# Adjust for intensity, if possible.
if color < 8 and intensity > 0:
color += 8
constructor = self.color_map.get(color, None)
if isinstance(constructor, basestring):
# If this is an X11 color name, we just hope there is a close SVG
# color name. We could use QColor's static method
# 'setAllowX11ColorNames()', but this is global and only available
# on X11. It seems cleaner to aim for uniformity of behavior.
return QtGui.QColor(constructor)
elif isinstance(constructor, (tuple, list)):
return QtGui.QColor(*constructor)
return None
|
python
|
{
"resource": ""
}
|
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