From 51722279312ab8c9e0475766592a0c39a581c2a8 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Mon, 25 May 2026 20:06:01 -0500
Subject: [PATCH] [core] Enable ruff SLOT (flake8-slots) lint family (#16647)

---
 pyproject.toml                     | 1 +
 tests/unit_tests/test_yaml_util.py | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 5de8775713..a48bae660f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -125,6 +125,7 @@ select = [
   "PL",   # pylint
   "Q",    # flake8-quotes
   "SIM",  # flake8-simplify
+  "SLOT", # flake8-slots
   "RET",  # flake8-ret
   "T10",  # flake8-debugger
   "UP",   # pyupgrade
diff --git a/tests/unit_tests/test_yaml_util.py b/tests/unit_tests/test_yaml_util.py
index de70a5307d..d6fb5b81f2 100644
--- a/tests/unit_tests/test_yaml_util.py
+++ b/tests/unit_tests/test_yaml_util.py
@@ -907,7 +907,7 @@ def test_format_path_current_obj_without_location_falls_back_to_key():
     """An ESPHomeDataBase current_obj with no esp_range falls back to the key's location."""
 
     class _NoRange(ESPHomeDataBase, str):
-        pass
+        __slots__ = ()
 
     obj = _NoRange.__new__(_NoRange, "value")
     str.__init__(obj)