##// END OF EJS Templates
substitute open(...) for file(...)...
substitute open(...) for file(...) The file type is gone in py3k, and all file objects are under the new io hierarchy. Since open(...) is supported on both Python 2 and 3, use it instead of file in all instances. This isn't caught by 2to3.

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r5390:c82649ea
r6650:15f8e057
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syspathcontext.py
69 lines | 2.0 KiB | text/x-python | PythonLexer
Brian Granger
Work on startup related things....
r2252 # encoding: utf-8
"""
Context managers for adding things to sys.path temporarily.
Authors:
* Brian Granger
"""
#-----------------------------------------------------------------------------
Matthias BUSSONNIER
update copyright to 2011/20xx-2011...
r5390 # Copyright (C) 2008-2011 The IPython Development Team
Brian Granger
Work on startup related things....
r2252 #
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import sys
Brian Granger
Work to address the review comments on Fernando's branch....
r2498 #-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
Brian Granger
Work on startup related things....
r2252 class appended_to_syspath(object):
"""A context for appending a directory to sys.path for a second."""
def __init__(self, dir):
self.dir = dir
def __enter__(self):
if self.dir not in sys.path:
sys.path.append(self.dir)
self.added = True
else:
self.added = False
def __exit__(self, type, value, traceback):
if self.added:
try:
sys.path.remove(self.dir)
except ValueError:
pass
# Returning False causes any exceptions to be re-raised.
return False
class prepended_to_syspath(object):
"""A context for prepending a directory to sys.path for a second."""
def __init__(self, dir):
self.dir = dir
def __enter__(self):
if self.dir not in sys.path:
sys.path.insert(0,self.dir)
self.added = True
else:
self.added = False
def __exit__(self, type, value, traceback):
if self.added:
try:
sys.path.remove(self.dir)
except ValueError:
pass
# Returning False causes any exceptions to be re-raised.
return False