diff --git a/homeassistant/components/environment_canada/sensor.py b/homeassistant/components/environment_canada/sensor.py index 1c9a6fa1709..8a734f74dd6 100644 --- a/homeassistant/components/environment_canada/sensor.py +++ b/homeassistant/components/environment_canada/sensor.py @@ -34,19 +34,11 @@ from .const import ATTR_STATION, DOMAIN ATTR_TIME = "alert time" -@dataclass(frozen=True) -class ECSensorEntityDescriptionMixin: - """Mixin for required keys.""" - - value_fn: Callable[[Any], Any] - - -@dataclass(frozen=True) -class ECSensorEntityDescription( - SensorEntityDescription, ECSensorEntityDescriptionMixin -): +@dataclass(frozen=True, kw_only=True) +class ECSensorEntityDescription(SensorEntityDescription): """Describes Environment Canada sensor entity.""" + value_fn: Callable[[Any], Any] transform: Callable[[Any], Any] | None = None