Decide what this prints before running it.
Read the program, type what you think its output is, then reveal & grade. The program runs in your browser (Pyodide); the evaluator only issues a pass/fail when the program itself reproduces the canonical answer.
starting…
Inspect every outcome path
For review: drive each of the six states on the current activity. The correct/incorrect paths run the real program; the four fail-closed paths perturb the runtime observation or support fact so you can see grading refuse safely — a defect never becomes a learner grade.