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# encoding: utf-8

"""

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