ty 0.0.103

on Python PyPI

Release Notes

Released on 2026-11-13.

Bug fixes

• Avoid spurious syntax warnings when applying fixes (#30404)
• Fix a panic checking class decorators with inferred return types (#30399)
• Infer nested classes as read-only attributes (#29346)
• Infer value types for bare Final and ClassVar (#30293)
• Preserve excluded types when inferring type variable upper bounds (#30237)
• Preserve inherited value types on repeated bare ClassVar annotations (#30396)
• Respect return constraints when promoting literal arguments (#30153)

LSP server

• Resolve pytest fixtures registered through pytest_plugins (#29588)

Contributors

• @carljm
• @abalakh
• @AlexWaygood

Install ty 0.0.103

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.103/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.103/ty-installer.ps1 | iex"

Download ty 0.0.103

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>