🐛 False positive 'Return annotation not ending with ]' on union retun type

[s-weigand]

For union return types that start with tuple[ (e.g. my use case tuple[Figure, Axis] | None) InternalError is raised false positively.
This is because _isTuple returns True for union types

pydoclint/pydoclint/utils/return_anno.py

Lines 59 to 63 in 062bb45

	def _isTuple(self) -> bool:
	return (
	self.annotation is not None
	and self.annotation.lower().startswith('tuple[')
	)

And consecutive checks are meant to work with pure tuples.

[jsh9]

Hi @s-weigand , thank you for finding out this edge case! I'm still using the old-school Union[..., ...] so I didn't think of this edge case.

I've submitted a PR to fix this bug. Would you mind taking a look and see whether I've missed any other edge cases?

Thanks again!