爬虫 登入电驴

import urllibimport urllib2postdata=urllib.urlencode({    'username':'spidertest',    'password':'spidertest1',    'continueURI':'http://www.verycd.com/',    'fk':'',    'save_cookie':'1',    'safe_login':0,    'login_submit':"登录"})header = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0'}req = urllib2.Request(    url = 'http://secure.verycd.com/signin',    headers = header,    data = postdata)result = urllib2.urlopen(req)#print len(result.read())print result.read()