Python爬虫简单运用爬取代理IP的实现

import requests
from lxml import etree
import time


class XiLaIp_Spider:

  def __init__(self):
    self.url = 'http://www.xiladaili.com/gaoni/'
    self.headers = {
      'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36',
      'cookie': 'td_cookie=1539882751; csrftoken=lymOXQp49maLMeKXS1byEMMmsavQPtOCOUwy6WIbfMNazZW80xKKA8RW2Zuo6ssy; Hm_lvt_31dfac66a938040b9bf68ee2294f9fa9=1592547159; Hm_lvt_9bfa8deaeafc6083c5e4683d7892f23d=1592535959,1592539254,1592612217; Hm_lpvt_9bfa8deaeafc6083c5e4683d7892f23d=1592612332',
    }
    self.proxy = '116.196.85.150:3128'
    self.proxies = {
      "http": "http://%(proxy)s/" % {'proxy': self.proxy},
      "https": "http://%(proxy)s/" % {'proxy': self.proxy}
    }
    self.list1 = []

  def get_url(self):
    file = open('Ip_Proxy.txt', 'a', encoding='utf-8')
    ok_file = open('OkIp_Proxy.txt', 'a', encoding='utf-8')
    for index in range(50):
      time.sleep(3)
      try:
        res = requests.get(url=self.url if index == 0 else self.url + str(index) + "/", headers=self.headers,
                  proxies=self.proxies, timeout=10).text
      except:
        continue
      data = etree.HTML(res).xpath("//*[@class='mt-0 mb-2 table-responsive']/table/tbody/tr/td[1]")
      # '//*[@id="scroll"]/table/tbody/tr/td[1]'
      score_data = etree.HTML(res).xpath("//*[@class='mt-0 mb-2 table-responsive']/table/tbody/tr/td[8]")
      for i, j in zip(data, score_data):
        # file.write(i.text + '\n')
        score = int(j.text)
        # 追加评分率大于十万的ip
        if score > 100000:
          self.list1.append(i.text)
      set(self.list1)
    file.close()
    ok_ip = []
    for i in self.list1:
      try:
        # 验证代理ip是否有效
        res = requests.get(url='https://www.baidu.com', headers=self.headers, proxies={'http': 'http://' + i},
                  timeout=10)
        if res.status_code == 200:
          # ok_file.write(i + '\n')
          ok_ip.append(i)
      except:
        continue
    ok_file.close()
    return ok_ip

  def run(self):
    return self.get_url()


dl = XiLaIp_Spider()
dl.run()