ty 0.0.83

on Python PyPI

Release Notes

Released on 2026-09-21.

Bug fixes

• Fix hangs from repeated partial application (#28754)
• Preserve PEP 695 bindings across nested classes (#28723)

LSP server

• Include required imports in every inlay hint (#28724)
• Preserve fast name filtering for normalized Unicode source (#28701)
• Refresh diagnostics after workspace configuration changes (#28755)

Diagnostic improvements

• Expand unreachable-code annotations for redundant conditions (#28674)
• Improve diagnostics for async generator stubs (#28692)
• Improve primary diagnostic annotations for redundant-condition(-strict) diagnostics (#28666)
• Point misplaced tuple ellipsis diagnostics at each ellipsis (#28709)

Other changes

• Add rules that detect suspicious uses of Callable, Iterable, Iterator or Generator types in a boolean context (#28554)
• Allow slots to override abstract properties (#28698)
• Avoid leaking Unknown from unconstrained collection use-sites (#28659)
• Diagnose unguarded cycles in implicit and PEP 613 aliases (#28704)
• Eagerly bind unused Self receivers (#28662)
• Generalize receiver binding for wrapped callables (#28725)
• More faithful representation of bound methods (#28410)
• Only classify evidence bounds for constrained type variables (#28700)
• Preserve inferred bindings during annotation cycles (#28717)
• Preserve quoted aliases during cycle recovery (#28710)
• Reject class-scoped type variables in init receivers (#28706)
• Reject unsafe TypedDict updates from hidden fields (#28711)
• Respect fixed caller type variables when selecting constraints (#28652)
• Reuse cached type alias inference for diagnostics (#28696)
• Simplify unions of disjoint exclusions (#28684)
• Update typing conformance suite (#28718)

Contributors

• @charliermarsh
• @AlexWaygood
• @sharkdp
• @carljm
• @ibraheemdev
• @zaniebot
• @MichaReiser

Install ty 0.0.83

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.83/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.83/ty-installer.ps1 | iex"

Download ty 0.0.83

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>