[issue45678] `functools.singledispatchmethod` is missing tests (and is buggy in 3.9)

[Alex Waygood]

Change by Alex Waygood <Alex.Waygood at Gmail.com>:


----------
components: +Library (Lib)
title: `functools.singledispatchmethod` is missing tests -> `functools.singledispatchmethod` is missing tests (and is buggy in 3.9)

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45678>
_______________________________________