Define light entity attributes as class variables (#50941)

homeassistant/components/light/__init__.py

@@ -559,15 +559,30 @@ class Profiles:
 class LightEntity(ToggleEntity):
     """Base class for light entities."""
 
+    _attr_brightness: int | None = None
+    _attr_color_mode: str | None = None
+    _attr_color_temp: int | None = None
+    _attr_effect_list: list[str] | None = None
+    _attr_effect: str | None = None
+    _attr_hs_color: tuple[float, float] | None = None
+    _attr_max_mired: int = 500
+    _attr_min_mired: int = 153
+    _attr_rgb_color: tuple[int, int, int] | None = None
+    _attr_rgbw_color: tuple[int, int, int, int] | None = None
+    _attr_rgbww_color: tuple[int, int, int, int, int] | None = None
+    _attr_supported_color_modes: set | None = None
+    _attr_supported_features: int = 0
+    _attr_xy_color: tuple[float, float] | None = None
+
     @property
     def brightness(self) -> int | None:
         """Return the brightness of this light between 0..255."""
-        return None
+        return self._attr_brightness
 
     @property
     def color_mode(self) -> str | None:
         """Return the color mode of the light."""
-        return None
+        return self._attr_color_mode
 
     @property
     def _light_internal_color_mode(self) -> str:
@@ -600,22 +615,22 @@ class LightEntity(ToggleEntity):
     @property
     def hs_color(self) -> tuple[float, float] | None:
         """Return the hue and saturation color value [float, float]."""
-        return None
+        return self._attr_hs_color
 
     @property
     def xy_color(self) -> tuple[float, float] | None:
         """Return the xy color value [float, float]."""
-        return None
+        return self._attr_xy_color
 
     @property
     def rgb_color(self) -> tuple[int, int, int] | None:
         """Return the rgb color value [int, int, int]."""
-        return None
+        return self._attr_rgb_color
 
     @property
     def rgbw_color(self) -> tuple[int, int, int, int] | None:
         """Return the rgbw color value [int, int, int, int]."""
-        return None
+        return self._attr_rgbw_color
 
     @property
     def _light_internal_rgbw_color(self) -> tuple[int, int, int, int] | None:
@@ -639,26 +654,26 @@ class LightEntity(ToggleEntity):
     @property
     def rgbww_color(self) -> tuple[int, int, int, int, int] | None:
         """Return the rgbww color value [int, int, int, int, int]."""
-        return None
+        return self._attr_rgbww_color
 
     @property
     def color_temp(self) -> int | None:
         """Return the CT color value in mireds."""
-        return None
+        return self._attr_color_temp
 
     @property
     def min_mireds(self) -> int:
         """Return the coldest color_temp that this light supports."""
         # Default to the Philips Hue value that HA has always assumed
         # https://developers.meethue.com/documentation/core-concepts
-        return 153
+        return self._attr_min_mired
 
     @property
     def max_mireds(self) -> int:
         """Return the warmest color_temp that this light supports."""
         # Default to the Philips Hue value that HA has always assumed
         # https://developers.meethue.com/documentation/core-concepts
-        return 500
+        return self._attr_max_mired
 
     @property
     def white_value(self) -> int | None:
@@ -668,12 +683,12 @@ class LightEntity(ToggleEntity):
     @property
     def effect_list(self) -> list[str] | None:
         """Return the list of supported effects."""
-        return None
+        return self._attr_effect_list
 
     @property
     def effect(self) -> str | None:
         """Return the current effect."""
-        return None
+        return self._attr_effect
 
     @property
     def capability_attributes(self):
@@ -808,12 +823,12 @@ class LightEntity(ToggleEntity):
     @property
     def supported_color_modes(self) -> set | None:
         """Flag supported color modes."""
-        return None
+        return self._attr_supported_color_modes
 
     @property
     def supported_features(self) -> int:
         """Flag supported features."""
-        return 0
+        return self._attr_supported_features
 
 
 class Light(LightEntity):