You can read the task, take hints and check your answer — but nothing is saved. No XP, no skill points, and this task will not be marked complete.
Write `withdraw(balance, amount)` that returns the new balance, but raises `ValueError` with the message `Insufficient funds` when the amount exceeds the balance.
What this proves: Fail loudly with a typed exception instead of a sentinel return value.
Need assistance? You can reveal sequential hints. Each hint applies a minor penalty to your score.
If you are completely stuck, you can unlock the full step-by-step walkthrough.