Loops are a commonly used structure in programming that allows you to repeat a block of code a set number of times, or until you meet a particular condition. This is useful for many reasons.

For rectangles, the inner and outer loops have hardcoded row and column ranges. #A 5x5 Python square star pattern for i in range(0,5): for j in range(0, 5): print("*", end='') print ... It's built ...

If you’ve ever written any Python at all, the chances are you’ve used iterators without even realising it. Writing your own and using them in your programs can provide significant performance ...