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Shaperilio/qtgui fixes (#13957)...
Shaperilio/qtgui fixes (#13957) I started using the released version of my `PySide6`-enabling changes and noted some problems. In this PR, I fix those, and also overall improve the feedback to the user when a GUI event loop is hooked in: - Report which event loop is running when using `%gui <some GUI>`; e.g. `%gui qt` will show `Installed qt6 event loop hook.` - Report when the event loop is disabled; i.e. `%gui` will show `GUI event loop hook disabled.` if an event loop hook was installed, or `No event loop hook running.` if nothing was installed. - Requesting a second event loop will give the message `Shell is already running a gui event loop for <some GUI>. Call with no arguments to disable current loop.` - Requesting a different version of Qt, i.e. `%gui qt6` followed by `%gui` followed by `%gui qt5` will show `Cannot switch Qt versions for this session; will use qt6.` followed by `Installed qt6 event loop hook.` (Fixes / improves #13864)

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decorators.py
83 lines | 2.6 KiB | text/x-python | PythonLexer
# encoding: utf-8
"""Decorators that don't go anywhere else.
This module contains misc. decorators that don't really go with another module
in :mod:`IPython.utils`. Before putting something here please see if it should
go into another topical module in :mod:`IPython.utils`.
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from typing import Sequence
from IPython.utils.docs import GENERATING_DOCUMENTATION
#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
def flag_calls(func):
"""Wrap a function to detect and flag when it gets called.
This is a decorator which takes a function and wraps it in a function with
a 'called' attribute. wrapper.called is initialized to False.
The wrapper.called attribute is set to False right before each call to the
wrapped function, so if the call fails it remains False. After the call
completes, wrapper.called is set to True and the output is returned.
Testing for truth in wrapper.called allows you to determine if a call to
func() was attempted and succeeded."""
# don't wrap twice
if hasattr(func, 'called'):
return func
def wrapper(*args,**kw):
wrapper.called = False
out = func(*args,**kw)
wrapper.called = True
return out
wrapper.called = False
wrapper.__doc__ = func.__doc__
return wrapper
def undoc(func):
"""Mark a function or class as undocumented.
This is found by inspecting the AST, so for now it must be used directly
as @undoc, not as e.g. @decorators.undoc
"""
return func
def sphinx_options(
show_inheritance: bool = True,
show_inherited_members: bool = False,
exclude_inherited_from: Sequence[str] = tuple(),
):
"""Set sphinx options"""
def wrapper(func):
if not GENERATING_DOCUMENTATION:
return func
func._sphinx_options = dict(
show_inheritance=show_inheritance,
show_inherited_members=show_inherited_members,
exclude_inherited_from=exclude_inherited_from,
)
return func
return wrapper