python2.7爬取可用代理IP

import urllib2
import random
import time
import re
#from lxml import etree  #第三方模块
def get_proxy(page):
headers = {
'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36'
}
req = urllib2.Request('http://www.xicidaili.com/nn/{}'.format(page),headers=headers) #构造一个Request对象
response = urllib2.urlopen(req) #发送请求
html = response.read()
proxy_list = []
ip_port_list = re.findall(r'<tr class=.*?>(.*?)</tr>',html,re.S)
#ip_list = re.findall(r'\d+\.\d+\.\d+\.\d+\',html)
print len(ip_port_list)
for i in ip_port_list:
ip = re.findall('\d+\.\d+\.\d+\.\d+\.',i)[0]
port = re.findall(r'<td>(\d+)</td>',i)[0]
#print ip,port  #打印测试
proxy = '{}:{}'.format(ip,port)
proxy_list.append(proxy)
return proxy_list
def proxy_read(proxy_list,i):
proxy = proxy_list[i]
print u'当前代理IP:{}'.format(proxy)
sleep_time = random.randint(1,3)
print '等待{}秒'.format(sleep_time)
time.sleep(sleep_time)
#urllib2 里面的方法
proxt_suport = urllib2.ProxyHandler({'http':proxy}) #构建代理Handler
opener = urllib2.build_opener(proxt_suport) #通过build_opener方法来使用Handler对象，然后创建opener对象
urllib2.install_opener(opener) #把opener对象变成全局的，之后使用的urlopen对象都是全局的
req = urllib2.Request('http://httpbin.org/ip')
try:
html = urllib2.urlopen(req).read()
print html
except Exception as e:
print e
print u'***打开失败***'
print u'当前ip不可用'
if __name__ == '__name__':
    proxy_list = get_proxy(1)
print '开始测试'
for i in range(100):
proxy.read(proxt_list,i)