[ty] Disallow assignment to Final class attributes
#19457
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sharkdp
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sharkdp
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Jul 21, 2025
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| # TODO: this should be an error | ||
| c.INSTANCE_FINAL_A = 2 | ||
| # TODO: this should be an error | ||
| c.INSTANCE_FINAL_B = 2 |
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Implementing this for implicit instance attributes is much more involved, so I'm putting this PR up as a first increment.
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AlexWaygood
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Jul 21, 2025
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Jul 21, 2025
dcreager
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* main: (25 commits) [ty] Sync vendored typeshed stubs (#19461) [ty] Extend tuple `__len__` and `__bool__` special casing to also cover tuple subclasses (#19289) [ty] bump docstring-adder pin (#19458) [ty] Disallow assignment to `Final` class attributes (#19457) Update dependency ruff to v0.12.4 (#19442) Update pre-commit hook astral-sh/ruff-pre-commit to v0.12.4 (#19443) Update rui314/setup-mold digest to 702b190 (#19441) Update taiki-e/install-action action to v2.56.19 (#19448) Update Rust crate strum_macros to v0.27.2 (#19447) Update Rust crate strum to v0.27.2 (#19446) Update Rust crate rand to v0.9.2 (#19444) Update Rust crate serde_json to v1.0.141 (#19445) Fix `unreachable` panic in parser (#19183) [`ruff`] Support byte strings (`RUF055`) (#18926) [ty] Avoid second lookup for `infer_maybe_standalone_expression` (#19439) [ty] Implemented "go to definition" support for import statements (#19428) [ty] Avoid secondary tree traversal to get call expression for keyword arguments (#19429) [ty] Add goto definition to playground (#19425) [ty] Add support for `@warnings.deprecated` (#19376) [ty] make `del x` force local resolution of `x` in the current scope (#19389) ...
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Summary
Emit errors for the following assignments:
Test Plan
Updated and new MD tests