利用Python爬取可用的代理IP

#encoding=utf8import urllib2from bs4 import BeautifulSoupimport urllibimport 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)