/usr/lib/python2.7/dist-packages/IPython/utils/version.py is in python-ipython 5.1.0-3.
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"""
Utilities for version comparison
It is a bit ridiculous that we need these.
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2013 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 distutils.version import LooseVersion
#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
def check_version(v, check):
"""check version string v >= check
If dev/prerelease tags result in TypeError for string-number comparison,
it is assumed that the dependency is satisfied.
Users on dev branches are responsible for keeping their own packages up to date.
"""
try:
return LooseVersion(v) >= LooseVersion(check)
except TypeError:
return True
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