判断ip和域名

^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$

^([a-zA-Z0-9]+(-[a-zA-Z0-9]+)*\.)+[a-zA-Z]{2,}$

import re

def is_ip(address):
    ip_regex = r'^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$'
    return re.match(ip_regex, address) is not None

def is_domain(address):
    domain_regex = r'^([a-zA-Z0-9]+(-[a-zA-Z0-9]+)*\.)+[a-zA-Z]{2,}$'
    return re.match(domain_regex, address) is not None

# 测试
print(is_ip("192.168.1.1"))  # True
print(is_domain("example.com"))  # True

import socket

def is_ip(address):
    try:
        socket.inet_aton(address)
        return True
    except socket.error:
        return False

def is_domain(address):
    try:
        socket.gethostbyname(address)
        return True
    except socket.gaierror:
        return False

# 测试
print(is_ip("192.168.1.1"))  # True
print(is_domain("example.com"))  # True