Python For Loops Explained Simply

Full transcript

Welcome to Logic Understand Simple, where we break down coding concepts in the easiest way possible. Today we are going to learn about loops, and by the end, you will completely get it. Imagine you want to print numbers from one to ten in Python. You could write print one, print two, print three, all the way to print ten. But what if you needed to print one thousand numbers? That would take forever and your hand would fall off. Think about building a small house. One or two workers can easily carry bricks and cement bags by hand, no big deal at all. But now imagine you need to build a ten-story building. Suddenly you need way more workers, way more time, and a whole lot more effort. So instead of making people repeat the same exhausting work over and over again, smart builders bring in a machine, like a crane, to lift all those bricks automatically and get the job done much faster and more efficiently than any human could alone. In programming, the loop is your machine. Instead of writing the same line of code over and over by hand, you write a for loop just once, and Python automatically repeats that action for you as many times as you need, instantly and without any mistakes. Here is what a Python for loop actually looks like in real code. You write for i in range one to eleven, then on the next line you write print i, and that single short loop prints every number from one to ten all by itself. One loop replaces ten lines of code. That is the power of loops.