Add and use currency cent constant (#40261)

homeassistant/components/griddy/sensor.py

@@ -1,7 +1,7 @@
 """Support for August sensors."""
 import logging
 
-from homeassistant.const import ENERGY_KILO_WATT_HOUR
+from homeassistant.const import CURRENCY_CENT, ENERGY_KILO_WATT_HOUR
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
 from .const import CONF_LOADZONE, DOMAIN
@@ -29,7 +29,7 @@ class GriddyPriceSensor(CoordinatorEntity):
     @property
     def unit_of_measurement(self):
         """Return the unit of measurement."""
-        return f"¢/{ENERGY_KILO_WATT_HOUR}"
+        return f"{CURRENCY_CENT}/{ENERGY_KILO_WATT_HOUR}"
 
     @property
     def name(self):

homeassistant/components/isy994/const.py

@@ -46,6 +46,7 @@ from homeassistant.components.switch import DOMAIN as SWITCH
 from homeassistant.const import (
     AREA_SQUARE_METERS,
     CONCENTRATION_PARTS_PER_MILLION,
+    CURRENCY_CENT,
     CURRENCY_DOLLAR,
     DEGREE,
     ENERGY_KILO_WATT_HOUR,
@@ -401,7 +402,7 @@ UOM_FRIENDLY_NAME = {
     UOM_DOUBLE_TEMP: UOM_DOUBLE_TEMP,
     "102": "kWs",
     "103": CURRENCY_DOLLAR,
-    "104": "¢",
+    "104": CURRENCY_CENT,
     "105": LENGTH_INCHES,
     "106": f"mm/{TIME_DAYS}",
     "107": "",  # raw 1-byte unsigned value

homeassistant/components/nsw_fuel_station/sensor.py

@@ -7,7 +7,7 @@ from nsw_fuel import FuelCheckClient, FuelCheckError
 import voluptuous as vol
 
 from homeassistant.components.sensor import PLATFORM_SCHEMA
-from homeassistant.const import ATTR_ATTRIBUTION
+from homeassistant.const import ATTR_ATTRIBUTION, CURRENCY_CENT, VOLUME_LITERS
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 from homeassistant.util import Throttle
@@ -179,7 +179,7 @@ class StationPriceSensor(Entity):
     @property
     def unit_of_measurement(self) -> str:
         """Return the units of measurement."""
-        return "¢/L"
+        return f"{CURRENCY_CENT}/{VOLUME_LITERS}"
 
     def update(self):
         """Update current conditions."""

homeassistant/const.py

@@ -384,6 +384,7 @@ DEGREE = "°"
 # Currency units
 CURRENCY_EURO = "€"
 CURRENCY_DOLLAR = "$"
+CURRENCY_CENT = "¢"
 
 # Temperature units
 TEMP_CELSIUS = f"{DEGREE}C"