Add and use currency constants (#40113)

homeassistant/components/dsmr_reader/definitions.py

@@ -1,6 +1,7 @@
 """Definitions for DSMR Reader sensors added to MQTT."""
 
 from homeassistant.const import (
+    CURRENCY_EURO,
     ELECTRICAL_CURRENT_AMPERE,
     ENERGY_KILO_WATT_HOUR,
     VOLT,
@@ -166,17 +167,17 @@ DEFINITIONS = {
     "dsmr/day-consumption/electricity1_cost": {
         "name": "Low tariff cost",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/electricity2_cost": {
         "name": "High tariff cost",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/electricity_cost_merged": {
         "name": "Power total cost",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/gas": {
         "name": "Gas usage",
@@ -186,37 +187,37 @@ DEFINITIONS = {
     "dsmr/day-consumption/gas_cost": {
         "name": "Gas cost",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/total_cost": {
         "name": "Total cost",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/energy_supplier_price_electricity_delivered_1": {
         "name": "Low tariff delivered price",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/energy_supplier_price_electricity_delivered_2": {
         "name": "High tariff delivered price",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/energy_supplier_price_electricity_returned_1": {
         "name": "Low tariff returned price",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/energy_supplier_price_electricity_returned_2": {
         "name": "High tariff returned price",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/day-consumption/energy_supplier_price_gas": {
         "name": "Gas price",
         "icon": "mdi:currency-eur",
-        "unit": "€",
+        "unit": CURRENCY_EURO,
     },
     "dsmr/meter-stats/dsmr_version": {
         "name": "DSMR version",

homeassistant/components/growatt_server/sensor.py

@@ -12,6 +12,7 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_PASSWORD,
     CONF_USERNAME,
+    CURRENCY_EURO,
     DEVICE_CLASS_BATTERY,
     DEVICE_CLASS_CURRENT,
     DEVICE_CLASS_ENERGY,
@@ -39,8 +40,8 @@ SCAN_INTERVAL = datetime.timedelta(minutes=5)
 # Sensor type order is: Sensor name, Unit of measurement, api data name, additional options
 
 TOTAL_SENSOR_TYPES = {
-    "total_money_today": ("Total money today", "€", "plantMoneyText", {}),
-    "total_money_total": ("Money lifetime", "€", "totalMoneyText", {}),
+    "total_money_today": ("Total money today", CURRENCY_EURO, "plantMoneyText", {}),
+    "total_money_total": ("Money lifetime", CURRENCY_EURO, "totalMoneyText", {}),
     "total_energy_today": (
         "Energy Today",
         ENERGY_KILO_WATT_HOUR,

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_DOLLAR,
     DEGREE,
     ENERGY_KILO_WATT_HOUR,
     FREQUENCY_HERTZ,
@@ -397,7 +398,7 @@ UOM_FRIENDLY_NAME = {
     UOM_8_BIT_RANGE: "",  # Range 0-255, no unit.
     UOM_DOUBLE_TEMP: UOM_DOUBLE_TEMP,
     "102": "kWs",
-    "103": "$",
+    "103": CURRENCY_DOLLAR,
     "104": "¢",
     "105": LENGTH_INCHES,
     "106": f"mm/{TIME_DAYS}",

homeassistant/components/pvpc_hourly_pricing/sensor.py

@@ -6,7 +6,7 @@ from typing import Optional
 from aiopvpc import PVPCData
 
 from homeassistant import config_entries
-from homeassistant.const import CONF_NAME, ENERGY_KILO_WATT_HOUR
+from homeassistant.const import CONF_NAME, CURRENCY_EURO, ENERGY_KILO_WATT_HOUR
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.event import async_call_later, async_track_time_change
@@ -19,7 +19,7 @@ _LOGGER = logging.getLogger(__name__)
 
 ATTR_PRICE = "price"
 ICON = "mdi:currency-eur"
-UNIT = f"€/{ENERGY_KILO_WATT_HOUR}"
+UNIT = f"{CURRENCY_EURO}/{ENERGY_KILO_WATT_HOUR}"
 
 _DEFAULT_TIMEOUT = 10
 

homeassistant/components/tankerkoenig/sensor.py

@@ -2,7 +2,12 @@
 
 import logging
 
-from homeassistant.const import ATTR_ATTRIBUTION, ATTR_LATITUDE, ATTR_LONGITUDE
+from homeassistant.const import (
+    ATTR_ATTRIBUTION,
+    ATTR_LATITUDE,
+    ATTR_LONGITUDE,
+    CURRENCY_EURO,
+)
 from homeassistant.helpers.update_coordinator import (
     CoordinatorEntity,
     DataUpdateCoordinator,
@@ -106,7 +111,7 @@ class FuelPriceSensor(CoordinatorEntity):
     @property
     def unit_of_measurement(self):
         """Return unit of measurement."""
-        return "€"
+        return CURRENCY_EURO
 
     @property
     def state(self):

homeassistant/const.py

@@ -380,6 +380,10 @@ ELECTRICAL_VOLT_AMPERE = f"{VOLT}{ELECTRICAL_CURRENT_AMPERE}"
 # Degree units
 DEGREE = "°"
 
+# Currency units
+CURRENCY_EURO = "€"
+CURRENCY_DOLLAR = "$"
+
 # Temperature units
 TEMP_CELSIUS = f"{DEGREE}C"
 TEMP_FAHRENHEIT = f"{DEGREE}F"

tests/components/pvpc_hourly_pricing/conftest.py

@@ -2,7 +2,11 @@
 import pytest
 
 from homeassistant.components.pvpc_hourly_pricing import ATTR_TARIFF, DOMAIN
-from homeassistant.const import ATTR_UNIT_OF_MEASUREMENT, ENERGY_KILO_WATT_HOUR
+from homeassistant.const import (
+    ATTR_UNIT_OF_MEASUREMENT,
+    CURRENCY_EURO,
+    ENERGY_KILO_WATT_HOUR,
+)
 
 from tests.common import load_fixture
 from tests.test_util.aiohttp import AiohttpClientMocker
@@ -15,7 +19,10 @@ FIXTURE_JSON_DATA_2019_10_29 = "PVPC_CURV_DD_2019_10_29.json"
 def check_valid_state(state, tariff: str, value=None, key_attr=None):
     """Ensure that sensor has a valid state and attributes."""
     assert state
-    assert state.attributes[ATTR_UNIT_OF_MEASUREMENT] == f"€/{ENERGY_KILO_WATT_HOUR}"
+    assert (
+        state.attributes[ATTR_UNIT_OF_MEASUREMENT]
+        == f"{CURRENCY_EURO}/{ENERGY_KILO_WATT_HOUR}"
+    )
     try:
         _ = float(state.state)
         # safety margins for current electricity price (it shouldn't be out of [0, 0.2])