astral-sh/ty 0.0.48

on GitHub

Release Notes

Released on 2026-06-10.

Performance

• Avoid redundant constraint saturation work (#25786)

Core type checking

• Add support for TypedDict extra_items (#25591)
• Improve closed=True TypedDict precision (#25651)
• Require subtyping for transitive constraint pivots (#25778)
• Sync vendored typeshed stubs (#25828). Typeshed diff

Contributors

• @charliermarsh
• @MichaReiser

Install ty 0.0.48

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.48/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.48/ty-installer.ps1 | iex"

Download ty 0.0.48

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>