Add test case for missing TypedDict TypeVar scope frame #13764
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This is a small follow-up to #13678 and #13755.
In the former diff, I added a TypeVar scope frame around TypedDict creation. However, I had really no good reason for doing this at the time: I wasn't able to find a bug due to the missing frame and added it purely speculatively, out of a desire for symmetry.
It turns out this missing frame does legitimately cause some issues, which were reported in the latter.
So, this diff encodes one of the reported bugs as a test case to make sure we don't regress.