python 判断一个字符串是否是IP

1. 代码

import re

def isIP(str):
    p = re.compile('^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$')
    if p.match(str):
        return True
    else:
        return False


myStr = "255.255.abc.255"

if isIP(myStr):
    print(myStr,"is a IP!")
else:
    print(myStr, "is not a IP!")