code: def login(self):
          
          response = self.session.get(self.signin_url, verify=False)
          user_param, password_param = self._get_hashed_params(response.text)
          login_data = {
              user_param: self.config['username'],
              password_param: self.config['password'],
              'once': self._get_once(response.text),
              'next': '/'
          }
          headers = {'Referer': 'https://www.v2ex.com/signin'}
          self.session.post(self.signin_url, headers=headers, data=login_data)
docs: Login v2ex, otherwise we can't complete the mission.