An Intro to ty - The Extremely Fast Python type checker

Ty is a brand new, extremely fast Python type checker written in Rust from the fine folks at Astral, the makers of Ruff. Ty is in preview and is not ready for production use, but you can still try it out on your code base to see how it compares to Mypy or other popular Python type checkers.

Getting Started with ty

You can try out ty using the online playg…