Python Lab · Topic 1 · Free
Learn by running it, not watching it.
Write and run real Python right here, on a phone, a school PC or at home, with nothing to install. Each challenge is marked automatically, and your progress is saved on this device.
Challenge 1 · Hello, World!1 test
Print exactly: Hello, World!
Press Run to check your answer.0 of 6 done
How it works
- Read the task, then change the code on the notepaper.
- Press Run (or Ctrl + Enter). Your code runs and the tests mark it.
- Green tests have passed. Red ones need another look; there's a hint after each run.
- Each square fills in when you complete a challenge.
The first run downloads Python into your browser, which takes a few seconds. After that it's instant.