From 978e421bfe0c5c7b7642000f7493c35d76904c8e Mon Sep 17 00:00:00 2001
From: Kirill Podoprigora <kirill.bast9@mail.ru>
Date: Tue, 30 Jan 2024 10:49:18 +0200
Subject: [PATCH] Reduce size of _List instances

---
 Lib/importlib/_bootstrap.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
index d942045f3de666..6d6292f9559253 100644
--- a/Lib/importlib/_bootstrap.py
+++ b/Lib/importlib/_bootstrap.py
@@ -53,7 +53,7 @@ def _new_module(name):
 
 # For a list that can have a weakref to it.
 class _List(list):
-    pass
+    __slots__ = ("__weakref__",)
 
 
 # Copied from weakref.py with some simplifications and modifications unique to