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(?P<pattern>.+?) # file pattern
(?:\s+ # optional Python module name:
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\s* # optional version range:
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(?P<pattern>.+?) # file pattern
\s* # optional version range:
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s� Return path to site-packages directory.
>>> sitedir((2, 5))
'/usr/lib/python2.5/site-packages/'
>>> sitedir((2, 7), 'python-foo', True)
'debian/python-foo/usr/lib/debug/usr/lib/python2.7/dist-packages/'
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c C� si | j d � } | j d � } x& | d | d k rF | d =| d =q! Wd j d g t | � d | � S( s~ Return relative path.
>>> relpath('/usr/share/python-foo/foo.py', '/usr/bin/foo', )
'../share/python-foo/foo.py'
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:param replacement: new shebang command (path to interpreter and options)
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r� t j d | � n Xd S( sp Check file's shebang.
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c C� sX d | } t | d t d t �} t j | j j � � } | rT t | j � d � Sd S( sh Return libpython version file is linked to or None.
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:returns: Python version
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c C� sG t j | � } | rC | j d � d k rC d j | j d d � � S| S( s Remove Python version and platform name from Egg files/dirs.
>>> clean_egg_name('python_pipeline-0.1.3_py3k-py3.1.egg-info')
'python_pipeline-0.1.3_py3k.egg-info'
>>> clean_egg_name('Foo-1.2-py2.7-linux-x86_64.egg-info')
'Foo-1.2.egg-info'
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