Why do we use i > 0 as the condition in a countdown loop?

Hello Akmaral, really nice question.

When you write a countdown loop, you need a condition that tells Python exactly when to stop. Using i > 0 does that perfectly. As long as i is still greater than zero, the loop keeps running. The moment i hits zero, the condition becomes false, and the loop stops.

So if you start at 5 and subtract 1 each time:

i = 5
while i > 0:
    print(i)
    i = i - 1

you’ll get:

5
4
3
2
1

The loop ends right before it would go into negative numbers. It’s simply a clean and safe stopping point.

If you have further questions, I'm here to help.