ty: An Extremely Fast Python Type Checker and Language Server Written in Rust
By
dvrp
Master baker tier. Every paragraph earns its place on the tray.
Summary
ty is an extremely fast Python type checker and language server written in Rust, developed by Astral (creators of uv and Ruff). It offers 10x-100x faster performance than mypy and Pyright, with comprehensive diagnostics, configurable rule levels, per-file overrides, suppression comments, and first-class project support. The article highlights its speed advantages and features for Python type checking.
Key quotes
· 5 pulledAn extremely fast Python type checker and language server, written in Rust.
10x - 100x faster than mypy and Pyright
Comprehensive diagnostics with rich contextual information
Configurable rule levels, per-file overrides, suppression comments, and first-class project support
ty is backed by Astral, the creators of uv and Ruff.
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