题解 | #验证IP地址#

#
# 验证IP地址
# @param IP string字符串 一个IP地址字符串
# @return string字符串
#
class Solution:
    def solve(self , IP ):
        # write code here
        if '.' in IP:
            for ip in IP.split('.'):
                if ip.isdigit() is False or ip == '' or ip[0] == '0' or (not 0 <= int(ip) <= 255):
                    return 'Neither'
            return 'IPv4'
        if ':' in IP:
            for ip in IP.split(':'):
                if ip == '' or (len(ip) > 1 and len(ip) == ip.count('0')):
                    return 'Neither'
        return 'IPv6'