ty 0.0.92

on Python PyPI

Release Notes

Released on 2026-10-26.

Core type checking

• Infer the types of Django model primary keys (pk and the automatic id) with django-types (#29642)
• Infer Django foreign key <field>_id types from the referenced field (#29664)
• Recognize get_<field>_display() on Django model fields with choices (#29651)
• Recognize get_next_by_<field>() and get_previous_by_<field>() on non-nullable Django date and datetime fields (#29653)

Bug fixes

• Preserve generic callback parameters when forwarding overloaded functions through a ParamSpec (#29649)
• Check implicit and PEP 613 type aliases as type expressions at their definitions (#29200)

CLI

• Emit SARIF reports with ty check --output-format sarif (#29635)

LSP server

• Skip scanning for scripts at startup and reload when uv script environments are disabled (#29697)

Diagnostic improvements

• Abbreviate large nested tuple types in diagnostics and inlay hints (#29691)
• Point to the expression that makes a type alias invalid, even when the alias is imported (#29654)

Performance

• Avoid redundant work when checking inherited attributes (#29699)
• Check for instance storage without inferring method assignments (#29709)
• Collect receiver annotations once per class (#29703)
• Check non-recursive protocol members before recursive ones (#29542)
• Reuse class member lookups when checking overrides (#29716)
• Reuse each generic context's inferable type variables (#29700)
• Short-circuit comparisons involving top and bottom callable signatures (#29537)
• Skip inferred writes when a declaration determines an instance member (#29702)
• Skip method signature inference for concrete decorator results (#29708)

Contributors

• @charliermarsh
• @ntBre
• @carljm
• @dcreager
• @sharkdp

Install ty 0.0.92

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.92/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.92/ty-installer.ps1 | iex"

Download ty 0.0.92

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>