[milkbikis]

Nice, I've always thought Python could do better by adopting source transformation tools like babel. I implemented something similar using lib2to3, which preserves whitespace and comments more accurately (than the ast module): https://github.com/banga/prefactor

[treesciencebot]

Yes! I love to do transformations with lib2to3, but unfortunately it is now deprecated. As I've stated in the README, for complex refactorings I also would personally prefer working with CST (probably through parso instead of regular lib2to3), but for refactoring small fragments I wasn't able to observe major differences in formatting in big codebases. Thanks for sharing this btw!

[milkbikis]

Ah I didn’t know it was deprecated, but good to see new work happening in this area!