From 7aa1359c4a7f5d3e494ed7aa56be57c2c3afde9f Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Sun, 12 Feb 2023 03:57:36 -0600
Subject: [PATCH] Cache try_parse_enum (#87911)

---
 homeassistant/util/enum.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/homeassistant/util/enum.py b/homeassistant/util/enum.py
index 7d1e3970586..f0de2206f1f 100644
--- a/homeassistant/util/enum.py
+++ b/homeassistant/util/enum.py
@@ -1,11 +1,23 @@
 """Helpers for working with enums."""
+from collections.abc import Callable
 import contextlib
 from enum import Enum
-from typing import Any, TypeVar
+from typing import TYPE_CHECKING, Any, TypeVar
+
+# https://github.com/python/mypy/issues/5107
+if TYPE_CHECKING:
+    _LruCacheT = TypeVar("_LruCacheT", bound=Callable)
+
+    def lru_cache(func: _LruCacheT) -> _LruCacheT:
+        """Stub for lru_cache."""
+
+else:
+    from functools import lru_cache
 
 _EnumT = TypeVar("_EnumT", bound=Enum)
 
 
+@lru_cache
 def try_parse_enum(cls: type[_EnumT], value: Any) -> _EnumT | None:
     """Try to parse the value into an Enum.