def run(self):
     sp = Spider()
     if not sp.login_succeed:
         self.stop()
     else:
         while True:
             new_stuff = sp.update()
             if len(new_stuff) > 0:
                 print str(len(new_stuff)) + " weibos to update"
                 glob.newswall.notifyCallbacks(new_stuff)
             time.sleep(crawl_interval)