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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def make_path_relative(path):
 """ makes an absolute path name to a relative pathname. """

    if os.path.isabs(path):
        drive_s,path = os.path.splitdrive(path)

        import re
        if not drive_s:
            path=re.compile("/*(.*)").findall(path)[0]
        else:
            path=path[1:]

    assert( not os.path.isabs( path ) ), path
    return path