如何用python获取一个网页的所有连接

很简单的直接上代码：

# -*- coding: utf-8 -*-
'''
如何用python获取一个网页的所有连接
author:zhangsir
'''
import requests
import time
from lxml import etree
#网址
url = 'https://www.baidu.com'
#请求头
headers={
"Host": "www.baidu.com",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36",
"Cookie": "BIDUPSID=C7465C07C18C65C97A99CA9252B157C5; PSTM=1663725617; BAIDUID=C7465C07C18C65C93CEFB95934D4AD90:FG=1; BD_HOME=1; H_PS_PSSID=36558_36462_36921_37300_36885_37345_36569_37405_37261_26350_37285_22157_37231; BD_UPN=1a314753; BAIDUID_BFESS=C7465C07C18C65C93CEFB95934D4AD90:FG=1; BA_HECTOR=84al0lal2184a4ah810lo25o1hiks0j19; ZFY=2znAwD2OEqUOkcGnGOgJBJQB89SW7H2KCibOnac:ALc4:C"
}
#爬虫
a = requests.get(url=url,headers=headers)
#获取源码
b = a.text
#转成lxml需要的格式
html = etree.HTML(b)
#获取a标签的所有连接
link = html.xpath('//a/@href')
#去重
list2 = list(set(link))
#打印
print(list2)