From: Kirill Podoprigora <kirill.bast9@mail.ru>
Date: Tue, 30 Jan 2024 18:44:09 +0000 (+0300)
Subject: ``importlib/_bootstrap.py``: Reduce size of ``_List`` instances (GH-114747)
X-Git-Tag: v3.13.0a4~252
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6de8aa31f39b3d8dbfba132e6649724eb07b8348;p=thirdparty%2FPython%2Fcpython.git

``importlib/_bootstrap.py``: Reduce size of ``_List`` instances (GH-114747)

Reduce size of _List instances
---

diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
index d942045f3de6..6d6292f95592 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