[ty] Document all special forms in ty_extensions#26263
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AlexWaygood
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Jun 23, 2026
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| ) -> ConstraintSet: | ||
| """ | ||
| Returns a constraint set that requires `typevar` to specialize to a type | ||
| that is a supertype of `lower_bound` and a subtype of `upper_bound`. | ||
| """ | ||
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| @staticmethod | ||
| def always() -> Self: | ||
| def always() -> ConstraintSet: | ||
| """Returns a constraint set that is always satisfied""" | ||
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| @staticmethod | ||
| def never() -> Self: | ||
| def never() -> ConstraintSet: |
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these changes are unrelated, but I noticed that ty was unhappy with me when I opened up this file in VSCode, because it's invalid to return Self from a staticmethod (very naughty of you @dcreager!)
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It is! Charlie added validation for it relatively recently
Typing conformance resultsNo changes detected ✅Current numbersThe percentage of diagnostics emitted that were expected errors held steady at 94.37%. The percentage of expected errors that received a diagnostic held steady at 89.00%. The number of fully passing files held steady at 94/134. |
Memory usage reportSummary
Significant changesClick to expand detailed breakdownsphinx
prefect
trio
flake8
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sharkdp
approved these changes
Jun 23, 2026
Co-authored-by: David Peter <[email protected]>
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Summary
As per the title
Test Plan
demo when hovering over
AlwaysTruthyin an inlay hint in the playground: