Python爬取可用的代理IP

#encoding=utf8

import urllib2

from bs4 import BeautifulSoup

import urllib

import socket

User_Agent = 'Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0'

header = {}

header['User-Agent'] = User_Agent

'''

获取所有代理IP地址

'''

def getProxyIp():

 proxy = []

 for i in range(1,2):

  try:

   url = 'http://www.xicidaili.com/nn/'+str(i)

   req = urllib2.Request(url,headers=header)

   res = urllib2.urlopen(req).read()

   soup = BeautifulSoup(res)

   ips = soup.findAll('tr')

   for x in range(1,len(ips)):

    ip = ips[x]

    tds = ip.findAll("td")

    ip_temp = tds[1].contents[0]+"\t"+tds[2].contents[0]

    proxy.append(ip_temp)

  except:

   continue

 return proxy

'''

验证获得的代理IP地址是否可用

'''

def validateIp(proxy):

 url = "http://ip.chinaz.com/getip.aspx"

 f = open("E:\ip.txt","w")

 socket.setdefaulttimeout(3)

 for i in range(0,len(proxy)):

  try:

   ip = proxy[i].strip().split("\t")

   proxy_host = "http://"+ip[0]+":"+ip[1]

   proxy_temp = {"http":proxy_host}

   res = urllib.urlopen(url,proxies=proxy_temp).read()

   f.write(proxy[i]+'\n')

   print proxy[i]

  except Exception,e:

   continue

 f.close()

if __name__ == '__main__':

 proxy = getProxyIp()

 validateIp(proxy)