From 435a0334d341e5f8faed594d9f015746bb7845db Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sat, 24 Jul 2021 21:26:02 +0300
Subject: bpo-44676: Serialize the union type using only public API (GH-27323)

Remove also the _from_args() constructor.
---
 Lib/copyreg.py | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'Lib/copyreg.py')

diff --git a/Lib/copyreg.py b/Lib/copyreg.py
index 7ab8c128eb..356db6f083 100644
--- a/Lib/copyreg.py
+++ b/Lib/copyreg.py
@@ -36,6 +36,12 @@ else:
 
     pickle(complex, pickle_complex, complex)
 
+def pickle_union(obj):
+    import functools, operator
+    return functools.reduce, (operator.or_, obj.__args__)
+
+pickle(type(int | str), pickle_union)
+
 # Support for pickling new-style objects
 
 def _reconstructor(cls, base, state):
-- 
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