upstream/ipython Files · IPython/deathrow/Shell.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.

Brian Granger - - Load All Authors

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      #!/usr/bin/env python

      # encoding: utf-8

      """

      A backwards compatibility layer for IPython.Shell.

      Previously, IPython had an IPython.Shell module.  IPython.Shell has been moved

      to IPython.core.shell and is being refactored.  This new module is provided

      for backwards compatability.  We strongly encourage everyone to start using

      the new code in IPython.core.shell.

      """

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

      #  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.

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

      from warnings import warn

      msg = """

      This module (IPython.Shell) is deprecated.  The classes that were in this

      module have been replaced by:

      IPShell->IPython.core.iplib.InteractiveShell

      IPShellEmbed->IPython.core.embed.InteractiveShellEmbed

      Please migrate your code to use these classes instead.

      """

      warn(msg, category=DeprecationWarning, stacklevel=1)

      from IPython.core.iplib import InteractiveShell as IPShell

      from IPython.core.embed import InteractiveShellEmbed as IPShellEmbed

      def start(user_ns=None, embedded=False):

          """Return an instance of :class:`InteractiveShell`."""

          if embedded:

              return IPShellEmbed(user_ns=user_ns)

          else:

              return IPShell(user_ns=user_ns)

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				#!/usr/bin/env python
				# encoding: utf-8
				"""
				A backwards compatibility layer for IPython.Shell.

				Previously, IPython had an IPython.Shell module. IPython.Shell has been moved
				to IPython.core.shell and is being refactored. This new module is provided
				for backwards compatability. We strongly encourage everyone to start using
				the new code in IPython.core.shell.
				"""

				#-----------------------------------------------------------------------------
				# 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.
				#-----------------------------------------------------------------------------

				from warnings import warn

				msg = """
				This module (IPython.Shell) is deprecated. The classes that were in this
				module have been replaced by:

				IPShell->IPython.core.iplib.InteractiveShell
				IPShellEmbed->IPython.core.embed.InteractiveShellEmbed

				Please migrate your code to use these classes instead.
				"""

				warn(msg, category=DeprecationWarning, stacklevel=1)

				from IPython.core.iplib import InteractiveShell as IPShell
				from IPython.core.embed import InteractiveShellEmbed as IPShellEmbed

				def start(user_ns=None, embedded=False):
				"""Return an instance of :class:`InteractiveShell`."""
				if embedded:
				return IPShellEmbed(user_ns=user_ns)
				else:
				return IPShell(user_ns=user_ns)