':param account: çšæ·å
:param passwd:  å¯ç 
:return:'

def login(self, account, passwd):

    self.username = account
    self.password = passwd
    (lt, execution) = self.get_webflow()
    postdata = {'username': account, 'password': passwd, 'lt': lt, 'execution': execution, '_eventId': 'submit'}
    loginurl = 'https://passport.csdn.net/account/login'
    response = self.session.post(url=loginurl, headers=self.headers, data=postdata)
    if (response.status_code == 200):
        print '\xe6\x81\xad\xe5\x96\x9c\xe6\x82\xa8\xe7\x99\xbb\xe9\x99\x86\xe6\x88\x90\xe5\x8a\x9f\xef\xbc\x81'
    else:
        print response.text
        print '\xe7\x99\xbb\xe5\xbd\x95\xe5\xa4\xb1\xe8\xb4\xa5\xef\xbc\x8c\xe8\xaf\xb7\xe9\x87\x8d\xe8\xaf\x95\xef\xbc\x81'
