upstream/ipython Files · IPython/kernel/core/traceback_formatter.py

Fully refactored subprocess handling on all platforms....

Fully refactored subprocess handling on all platforms. Now we have all process-related code in utils.process, which itself imports from platform-specific files as needed. On posix, we have reliable asynchronous delivery of stdout and stderr, and on win32 at least we have the basics that subprocess.py provides, since pexpect is not available. We also now support robust killing of subprocesses that may capture SIGINT: one SIGINT on our end is sent to the subprocess, but then we kill it, to prevent a rogue subprocess from hijacking the ipython console. Note that on posix, we now depend on pexpect, but we ship our own copy to users which we'll use if there's no system pexpect installed. UNC path handling for windows was implemented as a context manager called AvoidUNCPath.

Brian E Granger - - Load All Authors

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      # encoding: utf-8

      """Some formatter objects to extract traceback information by replacing

      sys.excepthook()."""

      __docformat__ = "restructuredtext en"

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

      #  Copyright (C) 2008  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

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

      import traceback

      class ITracebackFormatter(object):

          """ Objects conforming to this interface will format tracebacks into other

          objects.

          """

          # The kind of formatter.

          kind = 'traceback'

          # The unique identifier for this formatter.

          identifier = None

          def __call__(self, exc_type, exc_value, exc_traceback):

              """ Return a formatted representation of a traceback.

              """

              raise NotImplementedError

      class PlainTracebackFormatter(ITracebackFormatter):

          """ Return a string with the regular traceback information.

          """

          # The unique identifier for this formatter.

          identifier = 'plain'

          def __init__(self, limit=None):

              # The maximum number of stack levels to go back.

              # None implies all stack levels are returned.

              self.limit = limit

          def __call__(self, exc_type, exc_value, exc_traceback):

              """ Return a string with the regular traceback information.

              """

              lines = traceback.format_tb(exc_traceback, self.limit)

              lines.append('%s: %s' % (exc_type.__name__, exc_value))

              return '\n'.join(lines)

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				# encoding: utf-8

				"""Some formatter objects to extract traceback information by replacing
				sys.excepthook()."""

				__docformat__ = "restructuredtext en"

				#-------------------------------------------------------------------------------
				# Copyright (C) 2008 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
				#-------------------------------------------------------------------------------

				import traceback


				class ITracebackFormatter(object):
				""" Objects conforming to this interface will format tracebacks into other
				objects.
				"""

				# The kind of formatter.
				kind = 'traceback'

				# The unique identifier for this formatter.
				identifier = None


				def __call__(self, exc_type, exc_value, exc_traceback):
				""" Return a formatted representation of a traceback.
				"""

				raise NotImplementedError


				class PlainTracebackFormatter(ITracebackFormatter):
				""" Return a string with the regular traceback information.
				"""

				# The unique identifier for this formatter.
				identifier = 'plain'


				def __init__(self, limit=None):
				# The maximum number of stack levels to go back.
				# None implies all stack levels are returned.
				self.limit = limit

				def __call__(self, exc_type, exc_value, exc_traceback):
				""" Return a string with the regular traceback information.
				"""

				lines = traceback.format_tb(exc_traceback, self.limit)
				lines.append('%s: %s' % (exc_type.__name__, exc_value))
				return '\n'.join(lines)