题解 | #验证IP地址#

#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 验证IP地址
# @param IP string字符串 一个IP地址字符串
# @return string字符串
#
import re
class Solution:
    def solve(self , IP: str) -> str:
        # write code here
        if "." in IP:
            list=IP.split('.')
            for i in list:
                l=i[0]
                if i[0]=='0' or i.isdigit()==False  or int(i)>255 or int(i)<0:
                    return "Neither"
            return "IPv4"
        elif ":" in IP:
            list=IP.split(':')
            if len(list)!=8:
                return "Neither"
            for i in list:
                if i=="" or not re.findall(r'^[0-9a-fA-F]{1,4}$',i):
                    return "Neither"
            return "IPv6"
        else:
            return "Neither"