commit 2995bff4269d274c0a3abfd45dc33b28f0c3e25f
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Mon May 03 19:45:30 2021 -0700
committer GitHub <noreply@github.com> Mon May 03 19:45:30 2021 -0700
tree 0f7efeaa62c923c226f75b8ed7b33b42cc2d0da0
parent d194e1eb93e0ab47b63190eeae0dd6dde63ea34d

bpo-44018: random.seed() no longer mutates its inputs (GH-25856) (GH-25872)

Lib/random.py

diff --git a/Lib/random.py b/Lib/random.py
index 3a835ae..1310a2d 100644
--- a/Lib/random.py
+++ b/Lib/random.py
@@ -154,8 +154,7 @@ def seed(self, a=None, version=2):
         elif version == 2 and isinstance(a, (str, bytes, bytearray)):
             if isinstance(a, str):
                 a = a.encode()
-            a += _sha512(a).digest()
-            a = int.from_bytes(a, 'big')
+            a = int.from_bytes(a + _sha512(a).digest(), 'big')
 
         elif not isinstance(a, (type(None), int, float, str, bytes, bytearray)):
             _warn('Seeding based on hashing is deprecated\n'