如题 多次尝试未果 不知道原因所在

        params=urllib.urlencode({'username':'xxxx','password':'xxxx'})    
        cj = cookielib.LWPCookieJar()
        opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
        urllib2.install_opener(opener)

        loginurl = "http://www.pinggu.org/bbs/logging.php?action=login&loginsubmit=true"
        url = 'http://www.pinggu.org/bbs/task.php?action=apply&id=4'

        f=opener.open(loginurl,params)
        time.sleep(3)
        f=opener.open(url)
        result = f.read()