python实现模拟浏览器访问网页

原文：http://blog.csdn.net/boksic/article/details/16870453

import urllib2  import timeit  import thread   import time  i = 0  x = 0mylock = thread.allocate_lock()  def test(no,r):      global i      url = 'http://blog.csdn.net/'      for j in range(1,r):          req=urllib2.Request(url)           req.add_header("User-Agent","Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)")           file = urllib2.urlopen(req)          print file.getcode();          mylock.acquire()          i+=1          mylock.release()              print i;          thread.exit_thread()  def fast():  thread.start_new_thread(test,(1,50))  thread.start_new_thread(test,(2,50))   thread.start_new_thread(test,(3,50)) thread.start_new_thread(test,(4,50)) thread.start_new_thread(test,(5,50))thread.start_new_thread(test,(6,50))thread.start_new_thread(test,(7,50))for x in range(1,150): fast()  time.sleep(0.08)  x = x + 1