Implemented in rust, not python, so it's extremely fast. It's orders of magnitude faster than pylint itself.

How many orders of magnitude?

There's a very clear graph the first thing on ruff's GitHub page, easy to find and research yourself: https://github.com/charliermarsh/ruff Can't miss it if you take time to check out the project.

So 2, maybe 3

Your comment seems skeptical. Practically, It’s a night and day difference if you’ve integrated a linter with your editor. Plus, ruff is able to fix as well as lint.

Didn't mean it that way, something being 100+ times slower is a LOT. And I care a lot about tool speed. I just didn't really think I needed to be shamed for asking a question they had a ready answer for.

This would matter more if it did all the things Pylint does, but Ruff still has a ways to go. They're tracking progress in https://github.com/charliermarsh/ruff/issues/970.

Damm that's a lot of cases to cover. I wonder how performant will Ruff be once it reaches feature parity.