Return attribute dict directly without temporary variable (#41206)

homeassistant/components/alarmdecoder/binary_sensor.py

@@ -120,8 +120,7 @@ class AlarmDecoderBinarySensor(BinarySensorEntity):
     @property
     def device_state_attributes(self):
         """Return the state attributes."""
-        attr = {}
-        attr[CONF_ZONE_NUMBER] = self._zone_number
+        attr = {CONF_ZONE_NUMBER: self._zone_number}
         if self._rfid and self._rfstate is not None:
             attr[ATTR_RF_BIT0] = bool(self._rfstate & 0x01)
             attr[ATTR_RF_LOW_BAT] = bool(self._rfstate & 0x02)