From: Alex Waygood <Alex.Waygood@Gmail.com>
Date: Sun, 24 Sep 2023 16:18:27 +0000 (+0100)
Subject: gh-109653: Avoid a top-level import of `types` in `functools` (#109804)
X-Git-Tag: v3.13.0a1~322
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=40d1de758100368bce36ad7674bd937acca153bd;p=thirdparty%2FPython%2Fcpython.git

gh-109653: Avoid a top-level import of `types` in `functools` (#109804)
---

diff --git a/Lib/functools.py b/Lib/functools.py
index 6cb532323b1d..55990e742bf2 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -19,8 +19,9 @@ from collections import namedtuple
 # import types, weakref  # Deferred to single_dispatch()
 from reprlib import recursive_repr
 from _thread import RLock
-from types import GenericAlias
 
+# Avoid importing types, so we can speedup import time
+GenericAlias = type(list[int])
 
 ################################################################################
 ### update_wrapper() and wraps() decorator
diff --git a/Misc/NEWS.d/next/Library/2023-09-24-13-28-35.gh-issue-109653.9IFU0B.rst b/Misc/NEWS.d/next/Library/2023-09-24-13-28-35.gh-issue-109653.9IFU0B.rst
new file mode 100644
index 000000000000..c4f5a62433a2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-09-24-13-28-35.gh-issue-109653.9IFU0B.rst
@@ -0,0 +1,2 @@
+Improve import time of :mod:`functools` by around 13%. Patch by Alex
+Waygood.