From 25feac1bc41d9c7e476b5f680aa67c30260e901f Mon Sep 17 00:00:00 2001
From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Date: Thu, 8 Dec 2022 15:42:40 +0100
Subject: [PATCH] Fix issue with Callable, Union, and Python 3.9 [mqtt]
 (#83547)

---
 homeassistant/components/mqtt/client.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/homeassistant/components/mqtt/client.py b/homeassistant/components/mqtt/client.py
index c4241cbc9e0..2fca77ba25f 100644
--- a/homeassistant/components/mqtt/client.py
+++ b/homeassistant/components/mqtt/client.py
@@ -1,8 +1,11 @@
 """Support for MQTT message handling."""
+# pylint: disable=deprecated-typing-alias
+#   In Python 3.9.0 and 3.9.1 collections.abc.Callable
+#   can't be used inside typing.Union or typing.Optional
 from __future__ import annotations
 
 import asyncio
-from collections.abc import Callable, Coroutine, Iterable
+from collections.abc import Coroutine, Iterable
 from functools import lru_cache, partial, wraps
 import inspect
 from itertools import groupby
@@ -10,7 +13,7 @@ import logging
 from operator import attrgetter
 import ssl
 import time
-from typing import TYPE_CHECKING, Any, Union, cast
+from typing import TYPE_CHECKING, Any, Callable, Union, cast
 import uuid
 
 import attr