Read-eval-print loop

A read-eval-print loop, also known as REPL, is a tool that helps people write and test computer code. Think of it like a game where you get to tell a computer what to do.

First, you "read" what you want the computer to do by typing it in using a special language that the computer can understand. This is called code.

Then, the computer "evaluates" the code to figure out what you want it to do. It uses its brain (also known as the processor) to understand your instructions.

After that, the computer "prints" the results of what it did so you can see what happened. This is like a report card showing you how well the computer followed your instructions.

Finally, you get to "loop" back to the beginning and try again with new instructions. You keep typing in new code, and the computer keeps following your orders until you get it just right.

A read-eval-print loop is useful because it helps people write code much faster and with less errors. By giving instant feedback on what the computer does with your instructions, you can learn quickly and easily how to write better code.