requests-cookies多次请求并持续访问

#coding=utf-8
#用于判断修改密码后的持续访问

import requests
for i in range(1,10000):
url = 'https://passport.baidu.com/center?t=1436601822'
coo = {'cookies_are':'BAIDUID=xxx'}
r = requests.get(url,cookies = coo)
#print r.headers['Content-Type']
print len(r.text)
print r.content
if len(r.text) == 12558:
print url
else:
print 'error'