Event loop

Imagine you're playing with a toy that has a bunch of buttons. Each button does something different. Now, imagine that you have to keep pressing these buttons over and over again to keep the toy going.

That's what a computer program does too! The program runs a bunch of code, or instructions, to make stuff happen on your screen. Sometimes, these instructions need to wait for something to happen before continuing, like when you click a button on a web page.

This is where the event loop comes in. The event loop is like a traffic cop for your program. It's a tiny piece of software that keeps an eye on everything going on in your program, and decides which instructions should be run next.

Whenever your program is waiting for something to happen, like a button click, the event loop takes over. It puts the waiting instructions aside, and starts looking for new things to happen.

When the thing your program was waiting for finally happens, like a button being clicked, the event loop jumps back in and picks up where it left off. It runs the instructions that were waiting, and the program keeps going like nothing happened!

So, the event loop is like a giant robot toy with lots of buttons. When you press one button, the robot runs that set of instructions until it's done, and then goes back to waiting for the next button press. And when the robot is waiting, the event loop makes sure it doesn't get bored and starts doing something else.