The basics · First programs

Your first program

A program is a list of instructions, run from the top down. · 6 minutes

A model can write most of the code you will ever need. Learn to write some anyway. You cannot judge code you have never written, and every check you will later make on generated code — does this do what it says? — starts with having done it yourself, badly, and then less badly.

So: Python, in your browser, nothing to install. Every program on these pages runs for real.

Predict first

What does this print?

1print("one")
2print("two")
3print("three")