request = sanitized_Request(
             self._LOGIN_URL, urlencode_postdata(login_form))
         response = self._download_webpage(
         request = sanitized_Request(
             self._LOGIN_URL, urlencode_postdata(login_form))
         response = self._download_webpage(
 
         if all(logout_pattern not in response
                for logout_pattern in ['href="/accounts/logout/"', '>Log out<']):
 
         if all(logout_pattern not in response
                for logout_pattern in ['href="/accounts/logout/"', '>Log out<']):