Summary

I wonder if this could be considered part of #18502. It may also be related to #19402 and #19359. But I am not sure, and none of those mention this rule specifically.

UP043 seems to only trigger in Python 3.13+. However, it seems that (as long as you are using from __future__ import annotations?) the new syntax works in older versions. I tried 3.9, and things work both at run time (at least as long as you do not try to resolve the type?) and when running mypy.

Version

0.12.5