__init__.py 文件源码

def _get_sensor_state(self, entity_id, remote_states=None):

        def _opt_float(x: str) -> Optional[float]:
            try:
                return float(x)
            except ValueError:
                return None

        value = None
        if remote_states is not None:
            value = [_opt_float(s.state) for s in
                     filter(lambda x: x.entity_id == entity_id,
                            remote_states)]
            if value:
                value = value[0]
        else:
            sensor = self.hass.states.get(entity_id)
            if sensor is not None:
                value = _opt_float(sensor.state)
        return value