python使用代理服务器访问/urllib2

本来想用python编写个网络爬虫程序玩玩，可是无法通过公司代理，报407错误，狠狠的Google+反复测试，终于执行成功，记录代码如下：

import urllib2
import os

proxy_info = {'user':'域名\用户名', 'password':'口令' , 'server':'代理服务器地址:端口'}
url = "http://www.baidu.com"

def url_build_proxy_opener(proxy_info):
   passmgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
   passmgr.add_password(None, proxy_info['server'] , proxy_info['user'], proxy_info['password'])
   auth = urllib2.ProxyBasicAuthHandler(passmgr)
   opener = urllib2.build_opener(urllib2.ProxyHandler({'http':proxy_info['server']}) , auth)
   return opener

opener = url_build_proxy_opener(proxy_info)
urllib2.install_opener(opener)
response = urllib2.urlopen(url)
print(response.read())

os.system("pause")