def time_delta(self):
        """Get the delta between this computer and RunAbove cluster."""
        if self._time_delta is None:
            try:
                server_time = int(requests.get(self.base_url + "/time").text)
            except ValueError:
                raise APIError(msg='Impossible to get time from RunAbove')
            self._time_delta = int(time.time()) - server_time
        return self._time_delta
dataset/ETHPy150Open runabove/python-runabove/runabove/wrapper_api.py/WrapperApi.time_delta/swapped operands of `-`