[3.12] gh-109653: Reduce the import time of `random` by 60% (GH-110221) (#110247)

gh-109653: Fix regression in the import time of `random` in Python 3.12 (GH-110221)
(cherry picked from commit 21a6263020db17020b2886f996bc23aa8cb7fbdf)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

diff --git a/Lib/random.py b/Lib/random.py
index 1d789b107904fb9736e679c1116efe09b83b4b51..1cfc2ba2f025b5d059e1a13ffd07b3d8005195fd 100644 (file)
--- a/Lib/random.py
+++ b/Lib/random.py
@@ -65,7 +65,7 @@ import _random
 
 try:
     # hashlib is pretty heavy to load, try lean internal module first
-    from _sha512 import sha512 as _sha512
+    from _sha2 import sha512 as _sha512
 except ImportError:
     # fallback to official implementation
     from hashlib import sha512 as _sha512

diff --git a/Misc/NEWS.d/next/Library/2023-10-02-15-40-10.gh-issue-109653.iB0peK.rst b/Misc/NEWS.d/next/Library/2023-10-02-15-40-10.gh-issue-109653.iB0peK.rst
new file mode 100644 (file)
index 0000000..5433097
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-02-15-40-10.gh-issue-109653.iB0peK.rst
@@ -0,0 +1,2 @@
+Fix a Python 3.12 regression in the import time of :mod:`random`. Patch by Alex
+Waygood.