p = re.compile("^((?:(2[0-4]\d)|(25[0-5])|([01]?\d\d?))\.){3}(?:(2[0-4]\d)|(255[0-5])|([01]?\d\d?))$") 相关文章: 2022-12-23 2022-12-23 2021-12-26 2021-12-26 2021-10-06