[ty] Implicit instance attributes declared Final
#19462
Merged
Conversation
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
Contributor
|
Contributor
|
| Lint rule | Added | Removed | Changed |
|---|---|---|---|
invalid-return-type |
1 | 0 | 0 |
| Total | 1 | 0 | 0 |
AlexWaygood
approved these changes
Jul 21, 2025
dcreager
added a commit
that referenced
this pull request
Jul 22, 2025
* main: (76 commits) Move fix suggestion to subdiagnostic (#19464) [ty] Implement non-stdlib stub mapping for classes and functions (#19471) [ty] Disallow illegal uses of `ClassVar` (#19483) [ty] Disallow `Final` in function parameter/return-type annotations (#19480) [ty] Extend `Final` test suite (#19476) [ty] Minor change to diagnostic message for invalid Literal uses (#19482) [ty] Detect illegal non-enum attribute accesses in Literal annotation (#19477) [ty] Reduce size of `TypeInference` (#19435) Run MD tests for Markdown-only changes (#19479) Revert "[ty] Detect illegal non-enum attribute accesses in Literal annotation" [ty] Detect illegal non-enum attribute accesses in Literal annotation [ty] Added semantic token support for more identifiers (#19473) [ty] Make tuple subclass constructors sound (#19469) [ty] Pass down specialization to generic dataclass bases (#19472) [ty] Garbage-collect reachability constraints (#19414) [ty] Implicit instance attributes declared `Final` (#19462) [ty] Expansion of enums into unions of literals (#19382) [ty] Avoid rechecking the entire project when changing the opened files (#19463) [ty] Add warning for unknown `TY_MEMORY_REPORT` value (#19465) [ty] Sync vendored typeshed stubs (#19461) ...
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Summary
Adds proper type inference for implicit instance attributes that are declared with a "bare"
Finaland addsinvalid-assignmentdiagnostics for all implicit instance attributes that are declaredFinalorFinal[…].Test Plan
New and updated MD tests.
Ecosystem analysis
pytest (https://github.com/pytest-dev/pytest) + error[invalid-return-type] src/_pytest/fixtures.py:1662:24: Return type does not match returned value: expected `Scope`, found `Scope | (Unknown & ~None & ~((...) -> object) & ~str) | (((str, Config, /) -> Unknown) & ~((...) -> object) & ~str) | (Unknown & ~str)The definition of the
scopeattribute is here. Looks like this is a new false positive due to missingTypeAliassupport that is surfaced here because we now infer a more precise type forFixtureDef._scope.