The humble loop: it's hard to write a program without it. Whether it's processing numbers in a sequence, lines in a text file, users in a database, or any other list of things, you use loops all the time. But did you know that Python has a lot of different ways to write loops? Reaching for the right looping tool can make your code cleaner, more readable, easier to test, and it can even make it run faster! By the end of this talk, you'll be looping like a pro, and your code will be better for it.