https://sinon.github.io/future-python-type-checkers/

[utterances-bot]

How Well Do New Python Type Checkers Conform? A Deep Dive into Ty, Pyrefly, and Zuban

A comparison of three new Rust-based Python type checkers through the lens of typing spec conformance: Astral's ty, Meta's pyrefly, and David Halter's zuban

https://sinon.github.io/future-python-type-checkers/

[yangdanny97]

What timing, we added Pyrefly to the conformance leaderboard the same weekend you published this post lol

python/typing#2080

[sinon]

Congratulations on the progress @yangdanny97 ! Seeing it side-by-side with pyre really shows the progress you and your team have made, as it's already surpassed pyre on so many aspects on the conformance suite 🚀

[Jamie-Chang]

I didn't know the conformance suite existed, definitely useful for evaluating different options (and for convincing people to use pyright)