ty can now detect always-true/always-false conditions, catching uncalled-function bugs
charliermarsh · x · 2026-09-25
ty, the Python type checker, can now detect conditions that are always-true or always-false. A classic case: forgetting to call a function in an if-statement — the function object itself is always truthy. These aren't type errors but are very often mistakes; the team found and fixed multiple bugs like this internally.
Related event: ty Adds Always-True/Always-False Condition Detection(2 posts)→
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