python验证身份证

_natual_id_weight = (7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2)

def _is_natural_id_valid(oid: str) -> bool:
    if not isinstance(oid, str) or len(oid) != 18 or not oid[:-1].isdigit():
        return False
    s = sum(int(d) * _natual_id_weight[i] for i, d in enumerate(oid[:-1]))
    result = (12 - s % 11) % 11
    if result == 10:
        return oid[-1] == 'X'
    else:
        return oid[-1] == str(result)