Map ipma weather condition codes once (#98512)

homeassistant/components/ipma/const.py

@@ -1,4 +1,6 @@
 """Constants for IPMA component."""
+from __future__ import annotations
+
 from datetime import timedelta
 
 from homeassistant.components.weather import (
@@ -31,7 +33,7 @@ ENTITY_ID_SENSOR_FORMAT_HOME = f"{WEATHER_DOMAIN}.ipma_{HOME_LOCATION_NAME}"
 
 MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=30)
 
-CONDITION_CLASSES = {
+CONDITION_CLASSES: dict[str, list[int]] = {
     ATTR_CONDITION_CLOUDY: [4, 5, 24, 25, 27],
     ATTR_CONDITION_FOG: [16, 17, 26],
     ATTR_CONDITION_HAIL: [21, 22],
@@ -48,5 +50,10 @@ CONDITION_CLASSES = {
     ATTR_CONDITION_EXCEPTIONAL: [],
     ATTR_CONDITION_CLEAR_NIGHT: [-1],
 }
+CONDITION_MAP = {
+    cond_code: cond_ha
+    for cond_ha, cond_codes in CONDITION_CLASSES.items()
+    for cond_code in cond_codes
+}
 
 ATTRIBUTION = "Instituto Português do Mar e Atmosfera"

homeassistant/components/ipma/weather.py

@@ -37,7 +37,7 @@ from homeassistant.util import Throttle
 
 from .const import (
     ATTRIBUTION,
-    CONDITION_CLASSES,
+    CONDITION_MAP,
     DATA_API,
     DATA_LOCATION,
     DOMAIN,
@@ -135,10 +135,7 @@ class IPMAWeather(WeatherEntity, IPMADevice):
         if identifier == 1 and not is_up(self.hass, forecast_dt):
             identifier = -identifier
 
-        return next(
-            (k for k, v in CONDITION_CLASSES.items() if identifier in v),
-            None,
-        )
+        return CONDITION_MAP.get(identifier)
 
     @property
     def condition(self):