astral-sh/ty — An extremely fast Python type checker and language server, written in Rust.

Description and use

**astral-sh/ty** is a high‑performance Python type checker and language server built in Rust, offering rapid static analysis and real‑time feedback for Python codebases. By leveraging Rust’s speed and safety, it delivers near‑instant type checking, diagnostics, and IDE‑friendly features while remaining fully open source. This makes it an ideal backend tool for developers seeking fast, reliable type safety and language‑server capabilities in their Python workflows.

Problem

astral-sh/ty may be useful when its README and activity match a concrete workflow.

Outcome

Early or unclear: treat as research material until maintenance, releases, docs, and issue activity are verified.

Evidence

An extremely fast Python type checker and language server, written in Rust.

Source