def remove_slug(path):
    """
    Return the remainin part of the path

        >>> remove_slug('/test/some/function/')
        test/some
    """
    if path.endswith('/'):
        path = path[:-1]
    if path.startswith('/'):
        path = path[1:]
    if "/" not in path or not path:
        return None
    parts = path.split("/")[:-1]
    return "/".join(parts)
Return the remainin part of the path

        >>> remove_slug('/test/some/function/')
        test/some