如何从url中提取没有www的域名

import re

def extract_domain_without_www(url):
    # 解析URL
    pattern = r'^https?://([^/?]+)'
    match = re.match(pattern, url)
    if match:
        domain = match.group(1)
        # 去除www前缀
        domain = re.sub(r'^www\.', '', domain)
        # 获取顶级域名
        top_level_domain = re.search(r'\.[^.]+$', domain).group()
        return domain, top_level_domain
    else:
        return None

# 示例用法
url = 'https://www.example.com/path/to/page?param=value'
domain, top_level_domain = extract_domain_without_www(url)
print('Domain:', domain)
print('Top-level Domain:', top_level_domain)

Domain: example.com
Top-level Domain: .com