[issue44662] Add ability to annotate types.Union

[Yurii Karabas]

Change by Yurii Karabas <1998uriyyo at gmail.com>:


----------
title: Add ability to serialise and annotate types.Union -> Add ability to annotate types.Union

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44662>
_______________________________________