ty 0.0.32

on Python PyPI

Release Notes

Released on 2026-04-20.

Bug fixes

• Fix panic when __get__ uses Concatenate self-type and wraps a __call__ (#24692)
• Avoid panicking on overloaded Callable type context (#24661)
• Expand class bases in per-base lint checks (#24695, #24699)
• Fix stack overflow for binary operator inference involving recursive types (#24551)

LSP server

• Dim out unreachable code in IDEs (#24580)
• Do not suggest argument completion when typing the value of a keyword argument (#24669)
• Retrieve the docstring from the overload implementation if an @overload-decorated function has no docstring (#23920)

Core type checking

• Allow if statements in TypedDict bodies (#24702)
• Disallow @disjoint_base on TypedDicts and Protocols (#24671)
• Do not consider a subclass of a @dataclass_transform-decorated class to have dataclass-like semantics if it has type in its MRO (#24679)
• Reject using properties with Never setters or deleters (#24510)
• Sync vendored typeshed stubs (#24646). Typeshed diff

Diagnostics

• Show error context for assignability diagnostics (#24309)
• Use partially qualified names when reporting diagnostics regarding bad calls to methods (#24560)
• Reduce source code context window to zero (#24689)
• Merge same-file annotations if there is only a single line separating them (#24694)

Performance

• Memoize binary operator return types (#24700)
• Gate protocol compatibility on member count (#24684)

Contributors

• @JelleZijlstra
• @kc0506
• @denyszhak
• @carljm
• @dcreager
• @AlexWaygood
• @dylwil3
• @charliermarsh
• @sharkdp
• @ibraheemdev

Install ty 0.0.32

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.32/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.32/ty-installer.ps1 | iex"

Download ty 0.0.32

Verifying GitHub Artifact Attestations

The artifacts in this release have attestations generated with GitHub Artifact Attestations. These can be verified by using the GitHub CLI:

gh attestation verify <file-path of downloaded artifact> --repo astral-sh/ty

You can also download the attestation from GitHub and verify against that directly:

gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>