这个这个，，python已经忘完了

#! /usr/bin/env python
# -*- coding=utf-8 -*-
#!/usr/bin/env python
# encoding: utf-8
# coding=utf-8

import time


# @Author pythontab.com
import urllib2

url =  "呵呵呵" 
req_header = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11',
'Accept':'text/html;q=0.9,*/*;q=0.8',
'Accept-Charset':'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
'Accept-Encoding':'gzip',
'Connection':'close',
'Referer':None #注意如果依然不能抓取的话，这里可以设置抓取网站的host
}
for x in range(900) :
    time.sleep(1)
    req_timeout = 5000
    req = urllib2.Request(url,None,req_header)
    resp = urllib2.urlopen(req,None,req_timeout)
    html = resp.read()
    print(x)