Use new unit enums in alexa (#83409)

* Use new unit enums in alexa

* Adjust for mypy

homeassistant/components/alexa/const.py

@@ -2,7 +2,7 @@
 from collections import OrderedDict
 
 from homeassistant.components import climate
-from homeassistant.const import TEMP_CELSIUS, TEMP_FAHRENHEIT
+from homeassistant.const import UnitOfTemperature
 
 DOMAIN = "alexa"
 EVENT_ALEXA_SMART_HOME = "alexa_smart_home"
@@ -61,7 +61,10 @@ CONF_SUPPORTED_LOCALES = (
     "pt-BR",
 )
 
-API_TEMP_UNITS = {TEMP_FAHRENHEIT: "FAHRENHEIT", TEMP_CELSIUS: "CELSIUS"}
+API_TEMP_UNITS = {
+    UnitOfTemperature.FAHRENHEIT: "FAHRENHEIT",
+    UnitOfTemperature.CELSIUS: "CELSIUS",
+}
 
 # Needs to be ordered dict for `async_api_set_thermostat_mode` which does a
 # reverse mapping of this dict and we want to map the first occurrence of OFF

homeassistant/components/alexa/entities.py

@@ -37,8 +37,7 @@ from homeassistant.const import (
     CLOUD_NEVER_EXPOSED_ENTITIES,
     CONF_DESCRIPTION,
     CONF_NAME,
-    TEMP_CELSIUS,
-    TEMP_FAHRENHEIT,
+    UnitOfTemperature,
     __version__,
 )
 from homeassistant.core import HomeAssistant, State, callback
@@ -745,7 +744,10 @@ class SensorCapabilities(AlexaEntity):
     def interfaces(self):
         """Yield the supported interfaces."""
         attrs = self.entity.attributes
-        if attrs.get(ATTR_UNIT_OF_MEASUREMENT) in (TEMP_FAHRENHEIT, TEMP_CELSIUS):
+        if attrs.get(ATTR_UNIT_OF_MEASUREMENT) in {
+            UnitOfTemperature.FAHRENHEIT,
+            UnitOfTemperature.CELSIUS,
+        }:
             yield AlexaTemperatureSensor(self.hass, self.entity)
             yield AlexaEndpointHealth(self.hass, self.entity)
             yield Alexa(self.hass)

homeassistant/components/alexa/handlers.py

@@ -47,8 +47,7 @@ from homeassistant.const import (
     SERVICE_VOLUME_SET,
     SERVICE_VOLUME_UP,
     STATE_ALARM_DISARMED,
-    TEMP_CELSIUS,
-    TEMP_FAHRENHEIT,
+    UnitOfTemperature,
 )
 from homeassistant.helpers import network
 from homeassistant.util import color as color_util, dt as dt_util
@@ -758,11 +757,11 @@ async def async_api_previous(
 def temperature_from_object(hass, temp_obj, interval=False):
     """Get temperature from Temperature object in requested unit."""
     to_unit = hass.config.units.temperature_unit
-    from_unit = TEMP_CELSIUS
+    from_unit = UnitOfTemperature.CELSIUS
     temp = float(temp_obj["value"])
 
     if temp_obj["scale"] == "FAHRENHEIT":
-        from_unit = TEMP_FAHRENHEIT
+        from_unit = UnitOfTemperature.FAHRENHEIT
     elif temp_obj["scale"] == "KELVIN" and not interval:
         # convert to Celsius if absolute temperature
         temp -= 273.15

homeassistant/components/climate/device_trigger.py

@@ -179,7 +179,7 @@ async def async_get_trigger_capabilities(
         }
 
     if trigger_type == "current_temperature_changed":
-        unit_of_measurement = hass.config.units.temperature_unit
+        unit_of_measurement: str = hass.config.units.temperature_unit
     else:
         unit_of_measurement = PERCENTAGE
 

homeassistant/util/unit_system.py

@@ -84,14 +84,14 @@ class UnitSystem:
         self,
         name: str,
         *,
-        accumulated_precipitation: str,
+        accumulated_precipitation: UnitOfPrecipitationDepth,
         conversions: dict[tuple[SensorDeviceClass | str | None, str | None], str],
-        length: str,
-        mass: str,
-        pressure: str,
-        temperature: str,
-        volume: str,
-        wind_speed: str,
+        length: UnitOfLength,
+        mass: UnitOfMass,
+        pressure: UnitOfPressure,
+        temperature: UnitOfTemperature,
+        volume: UnitOfVolume,
+        wind_speed: UnitOfSpeed,
     ) -> None:
         """Initialize the unit system object."""
         errors: str = ", ".join(