Working on a team in a larger python application, type checkers and linters are such a time saver. It's so nice not to think about how I'd like to format my code any longer. We've made some tweaks to our ruff rules to suit the team's opinion, and now even when I don't _love_ the way it formats a particular part of code, I just move on and get something productive done instead.

And type checking is so great for both preventing bugs (which it does all the time) and self-documenting code. Can't recommend them enough.