[issue43744] enum: Adding a member named _classname__ raises IndexError

[Ethan Furman]

Change by Ethan Furman <ethan at stoneleaf.us>:


----------
keywords: +patch
pull_requests: +24084
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/25349

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43744>
_______________________________________