Use _attr_* in hddtemp (#61721)

Co-authored-by: epenet <epenet@users.noreply.github.com>

homeassistant/components/hddtemp/sensor.py

@@ -6,13 +6,16 @@ from telnetlib import Telnet
 
 import voluptuous as vol
 
-from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
+from homeassistant.components.sensor import (
+    PLATFORM_SCHEMA,
+    SensorDeviceClass,
+    SensorEntity,
+)
 from homeassistant.const import (
     CONF_DISKS,
     CONF_HOST,
     CONF_NAME,
     CONF_PORT,
-    DEVICE_CLASS_TEMPERATURE,
     TEMP_CELSIUS,
     TEMP_FAHRENHEIT,
 )
@@ -63,34 +66,14 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
 class HddTempSensor(SensorEntity):
     """Representation of a HDDTemp sensor."""
 
+    _attr_device_class = SensorDeviceClass.TEMPERATURE
+
     def __init__(self, name, disk, hddtemp):
         """Initialize a HDDTemp sensor."""
         self.hddtemp = hddtemp
         self.disk = disk
-        self._name = f"{name} {disk}"
-        self._state = None
+        self._attr_name = f"{name} {disk}"
         self._details = None
-        self._unit = None
-
-    @property
-    def name(self):
-        """Return the name of the sensor."""
-        return self._name
-
-    @property
-    def native_value(self):
-        """Return the state of the device."""
-        return self._state
-
-    @property
-    def device_class(self):
-        """Return the class of this device, from component DEVICE_CLASSES."""
-        return DEVICE_CLASS_TEMPERATURE
-
-    @property
-    def native_unit_of_measurement(self):
-        """Return the unit the value is expressed in."""
-        return self._unit
 
     @property
     def extra_state_attributes(self):
@@ -104,13 +87,13 @@ class HddTempSensor(SensorEntity):
 
         if self.hddtemp.data and self.disk in self.hddtemp.data:
             self._details = self.hddtemp.data[self.disk].split("|")
-            self._state = self._details[2]
+            self._attr_native_value = self._details[2]
             if self._details is not None and self._details[3] == "F":
-                self._unit = TEMP_FAHRENHEIT
+                self._attr_native_unit_of_measurement = TEMP_FAHRENHEIT
             else:
-                self._unit = TEMP_CELSIUS
+                self._attr_native_unit_of_measurement = TEMP_CELSIUS
         else:
-            self._state = None
+            self._attr_native_value = None
 
 
 class HddTempData: