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

inputhook: disable CTRL+C when a hook is active....

inputhook: disable CTRL+C when a hook is active. On systems with 'readline', it's very likely to intercept a signal during a select() call. The default SIGINT handler will schedule a KeyboardInterrupt exception to be raised as soon as possible. If ctypes is used to install a Python callback for PyOS_InputHook, this will happen as soon as the bytecode execution starts, so even if the first instruction of the callback is a `try: ... except KeyboardInterrupt` clause, it's actually too late. As ctypes doesn't allow a Python callback to raise an exception, this ends up with IPython detecting an internal error... not pretty. We must therefore ignore the SIGINT signals until we are sure the exception handler is active, in the Python callback.

Bernardo B. Marques - - Load All Authors

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      # encoding: utf-8

      """Generic functions for extending IPython.

      See http://cheeseshop.python.org/pypi/simplegeneric.

      """

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2008-2009  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 IPython.core.error import TryNext

      from IPython.external.simplegeneric import generic

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      @generic

      def inspect_object(obj):

          """Called when you do obj?"""

          raise TryNext

      @generic

      def complete_object(obj, prev_completions):

          """Custom completer dispatching for python objects.

          Parameters

          ----------

          obj : object

              The object to complete.

          prev_completions : list

              List of attributes discovered so far.

          This should return the list of attributes in obj. If you only wish to

          add to the attributes already discovered normally, return

          own_attrs + prev_completions.

          """

          raise TryNext

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				# encoding: utf-8
				"""Generic functions for extending IPython.

				See http://cheeseshop.python.org/pypi/simplegeneric.
				"""

				#-----------------------------------------------------------------------------
				# Copyright (C) 2008-2009 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 IPython.core.error import TryNext
				from IPython.external.simplegeneric import generic

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------


				@generic
				def inspect_object(obj):
				"""Called when you do obj?"""
				raise TryNext


				@generic
				def complete_object(obj, prev_completions):
				"""Custom completer dispatching for python objects.

				Parameters
				----------
				obj : object
				The object to complete.
				prev_completions : list
				List of attributes discovered so far.

				This should return the list of attributes in obj. If you only wish to
				add to the attributes already discovered normally, return
				own_attrs + prev_completions.
				"""
				raise TryNext