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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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display_formatter.py
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/ IPython / kernel / core / display_formatter.py
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# encoding: utf-8
"""Objects for replacing sys.displayhook()."""
__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
#-------------------------------------------------------------------------------
class IDisplayFormatter(object):
""" Objects conforming to this interface will be responsible for formatting
representations of objects that pass through sys.displayhook() during an
interactive interpreter session.
"""
# The kind of formatter.
kind = 'display'
# The unique identifier for this formatter.
identifier = None
def __call__(self, obj):
""" Return a formatted representation of an object.
Return None if one cannot return a representation in this format.
"""
raise NotImplementedError
class ReprDisplayFormatter(IDisplayFormatter):
""" Return the repr() string representation of an object.
"""
# The unique identifier for this formatter.
identifier = 'repr'
def __call__(self, obj):
""" Return a formatted representation of an object.
"""
return repr(obj)
class PPrintDisplayFormatter(IDisplayFormatter):
""" Return a pretty-printed string representation of an object.
"""
# The unique identifier for this formatter.
identifier = 'pprint'
def __call__(self, obj):
""" Return a formatted representation of an object.
"""
import pprint
return pprint.pformat(obj)