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Instead of importing this module directly, import os and refer to
this module as os.path. The "os.path" name is an alias for this
module on Posix systems; on other systems (e.g. Mac, Windows),
os.path provides the same operations in a manner specific to that
platform, and is an alias to another module (e.g. macpath, ntpath).
Some of this can actually be useful on non-Posix systems too, e.g.
for manipulation of the pathname component of URLs.
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everything after the final slash. Either part may be empty.i N( u _get_sepu rfindu lenu rstrip( u pu sepu iu headu tail( ( u. /opt/alt/python33/lib64/python3.3/posixpath.pyu splitf s ! c C s@ t | t � r d } d } n d } d } t j | | d | � S( Ns /s .u /u .( u
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