commit 03aad3049d1591c76a219dfe089e5367f88f167e
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Sat Jul 17 14:10:21 2021 -0700
committer GitHub <noreply@github.com> Sun Jul 18 00:10:21 2021 +0300
tree 175acc35bac01a1cf8c7ef160096cc33f2e0064f
parent 2d055ce13250a4074f66a945381a149a3cf8c46f

[3.10] bpo-44654: Refactor and clean up the union type implementation (GH-27196) (GH-27219)

(cherry picked from commit 0fd27375cabd12e68a2f12cfeca11a2d5043429e)

Lib/typing.py

diff --git a/Lib/typing.py b/Lib/typing.py
index 1823cb8..508f4b6 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -1181,7 +1181,7 @@ def copy_with(self, params):
         return Union[params]
 
     def __eq__(self, other):
-        if not isinstance(other, _UnionGenericAlias):
+        if not isinstance(other, (_UnionGenericAlias, types.Union)):
             return NotImplemented
         return set(self.__args__) == set(other.__args__)