(path_or_paths)
...
...
...
def relative(path_or_paths):
    """..."""
    if path_or_paths is None:
        return None
    elif isinstance(path_or_paths, str):
        return os.path.normpath(os.path.relpath(path_or_paths))
    else:
        return list(map(os.path.normpath, map(os.path.relpath, path_or_paths)))
def relative ( path_or_paths ) : if path_or_paths is None : return None elif isinstance ( path_or_paths , str ) : return os . path . normpath ( os . path . relpath ( path_or_paths ) ) else : return list ( map ( os . path . normpath , map ( os . path . relpath , path_or_paths ) ) )