def groups_option(f):
    new_func = click.option("-g", "--groups",
                            help="Comma-separated list of requirement groups "
                            "to include.")(f)
    return update_wrapper(new_func, f)
def applies(cls, obj):
        if not cls.loaded():
            return False
        import cudf
        return isinstance(obj, (cudf.DataFrame, cudf.Series))