爬取一张网页（retrieve）

# 设置爬虫的用户代理池以及ip代理池

import urllib.request
import random

def set_user_ip_proxy():
    #设置用户代理池
    header_list = ["Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0","Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3704.400 QQBrowser/10.4.3587.400"]
    #设置ip池
    ip_pools = ["123.54.44.4：9999","110.243.13.120:9999", "183.166.97.101:9999"]

    #构建ip代理以及用户代理
    random_ip = random.choice(ip_pools)
    creat_ip = urllib.request.ProxyHandler({"http" : random_ip})
    creat_opener = urllib.request.build_opener(creat_ip)
    header = ("User-Agent", random.choice(header_list))
    creat_opener.addheaders = [header]
    urllib.request.install_opener(creat_opener)
    print("当前的header是：", header)
    print("当前的ip是：",random_ip)
    return 0

for i in range(2):   
    try:
        set_user_ip_proxy()
        urllib.request.urlretrieve("https://www.cnblogs.com/zijidefengge/p/12445145.html", "C:/users/mike1/desktop/" + str(i) + ".html")
    except Exception as error:
       continue