upstream/ipython Files · IPython/utils/sentinel.py

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 )

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      """Sentinel class for constants with useful reprs"""

      # Copyright (c) IPython Development Team.

      # Distributed under the terms of the Modified BSD License.

      class Sentinel(object):

          def __init__(self, name, module, docstring=None):

              self.name = name

              self.module = module

              if docstring:

                  self.__doc__ = docstring

          def __repr__(self):

              return str(self.module)+'.'+self.name

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				"""Sentinel class for constants with useful reprs"""

				# Copyright (c) IPython Development Team.
				# Distributed under the terms of the Modified BSD License.

				class Sentinel(object):

				def __init__(self, name, module, docstring=None):
				self.name = name
				self.module = module
				if docstring:
				self.__doc__ = docstring


				def __repr__(self):
				return str(self.module)+'.'+self.name