Python has a built in enumerate. function, which is keeping track of an element's index. You can pass whatever thing you're looping over to enumerate and bundle it with an index that you can then inline de structure into an index. So any time you see an index or i d x or i, or something, that's keeping track of the index,. And yet, like there is a lt in pattern for basically avoiding that. It makes me extremely happy. Like it happens actually, not just once in this piece of cobe, but twice where you can make taof enumerate.