disable unreachable warnings in boolean ops on TypeVars with value restriction - #9572
Merged
Merged
Conversation
…striction This paragraph explains the limitation with TypeVars: https://github.com/python/mypy/blob/eb50379defc13cea9a8cbbdc0254a578ef6c415e/mypy/checker.py#L967-#L974 We currently have no way of checking for all the type expansions, and it's causing the issue python#9456 Using `self.chk.should_report_unreachable_issues()` honors the suppression of the unreachable warning for TypeVar with value restrictions
Collaborator
|
Thanks! |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Description
This paragraph explains the limitation with TypeVars:
https://github.com/python/mypy/blob/eb50379defc13cea9a8cbbdc0254a578ef6c415e/mypy/checker.py#L967-#L974
We currently have no way of checking for all the type expansions,
and it's causing one part of the issue #9456
Using
self.chk.should_report_unreachable_issues()honors the suppression ofthe unreachable warning for TypeVar with value restrictions
Test Plan
I added a test statement that reproduces the unreachable false positive.
I added another test statement that is currently a false negative for the moment, because of the suppression for TypeVar type expansions.