From bbfffbb47ec273351595c53c147c07981ad3a1ab Mon Sep 17 00:00:00 2001
From: Erik Montnemery <erik@montnemery.com>
Date: Wed, 13 Dec 2023 16:57:22 +0100
Subject: [PATCH] Avoid mutating entity descriptions in melcloud (#105629)

---
 homeassistant/components/melcloud/sensor.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/homeassistant/components/melcloud/sensor.py b/homeassistant/components/melcloud/sensor.py
index ca02d15db01..1cb8930049d 100644
--- a/homeassistant/components/melcloud/sensor.py
+++ b/homeassistant/components/melcloud/sensor.py
@@ -2,7 +2,7 @@
 from __future__ import annotations
 
 from collections.abc import Callable
-from dataclasses import dataclass
+import dataclasses
 from typing import Any
 
 from pymelcloud import DEVICE_TYPE_ATA, DEVICE_TYPE_ATW
@@ -23,7 +23,7 @@ from . import MelCloudDevice
 from .const import DOMAIN
 
 
-@dataclass
+@dataclasses.dataclass
 class MelcloudRequiredKeysMixin:
     """Mixin for required keys."""
 
@@ -31,7 +31,7 @@ class MelcloudRequiredKeysMixin:
     enabled: Callable[[Any], bool]
 
 
-@dataclass
+@dataclasses.dataclass
 class MelcloudSensorEntityDescription(
     SensorEntityDescription, MelcloudRequiredKeysMixin
 ):
@@ -203,7 +203,10 @@ class AtwZoneSensor(MelDeviceSensor):
     ) -> None:
         """Initialize the sensor."""
         if zone.zone_index != 1:
-            description.key = f"{description.key}-zone-{zone.zone_index}"
+            description = dataclasses.replace(
+                description,
+                key=f"{description.key}-zone-{zone.zone_index}",
+            )
         super().__init__(api, description)
 
         self._attr_device_info = api.zone_device_info(zone)