python爬虫设置每个代理ip的简单方法

import urllib2
enable_proxy = True
proxy_handler = urllib2.ProxyHandler({"http" : 'http://some-proxy.com:8080'})
null_proxy_handler = urllib2.ProxyHandler({})
if enable_proxy:
    opener = urllib2.build_opener(proxy_handler)
else:
    opener = urllib2.build_opener(null_proxy_handler)
urllib2.install_opener(opener)

import urllib2
response = urllib2.urlopen('http://www.baidu.com', timeout=10)

import urllib2
response = urllib2.urlopen('http://www.baidu.com',data, 10)

from bs4 import BeautifulSoup
import requests
import random

def get_ip_list(url, headers):
 web_data = requests.get(url, headers=headers)
 soup = BeautifulSoup(web_data.text, 'lxml')
 ips = soup.find_all('tr')
 ip_list = []
 for i in range(1, len(ips)):
  ip_info = ips[i]
  tds = ip_info.find_all('td')
  ip_list.append(tds[1].text + ':' + tds[2].text)
 return ip_list

def get_random_ip(ip_list):
 proxy_list = []
 for ip in ip_list:
  proxy_list.append('http://' + ip)
 proxy_ip = random.choice(proxy_list)
 proxies = {'http': proxy_ip}
 return proxies

if __name__ == '__main__':
 url = 'http://www.xicidaili.com/nn/'
 headers = {
 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.60 Safari/537.17'
 }
 ip_list = get_ip_list(url, headers=headers)
 proxies = get_random_ip(ip_list)
 print(proxies)