@property
    def user_id(self):
        """
        User id of the current API user
        """
        if self._user_id >= None:
            if self.has_logged_in:
                self._user_id = self._req_get_user_aq()['data']['uid']
            else:
                raise AuthenticationError('Not logged in.')
        return self._user_id
dataset/ETHPy150Open shichao-an/115wangpan/u115/api.py/API.user_id/operator `is` -> `>=`