// hands-on lab

Python warm-up

~12 min

Run Python three ways in the practice shell.

Use the in-page practice shell (or the full VM) for these drills.

1. Check the interpreter: `python3 --version` 2. Explore the sample app: `cat ~/projects/app/app.py` 3. Run a script: `python3 ~/projects/app/app.py` (the shell shows its print output) 4. Create your own: `echo 'print("deploy ok")' > ~/hello.py` then `python3 ~/hello.py` 5. Inspect what you made: `ls -la ~` and `cat ~/hello.py`

Everything here works in the simulated shell; the full VM gives you the real REPL when you want it.

// checklist

python3 --version shows the interpreter
cat the sample app.py and read it
Create hello.py with echo and a print()
Run it: python3 ~/hello.py prints your text

Click Start sandbox for an in-browser Linux environment.

No Docker on the server — the sandbox runs in your browser (or an embedded lab host).