try / except / finally flow

What this problem practises

Exceptions are control flow. except clauses are matched top to bottom, finally runs even after a return, and catching too broadly hides the real bug behind a generic message.

This is an output-prediction problem: read the snippet carefully and write down exactly what it prints before anything runs. These questions are interview staples because they test whether you know the language rules, or merely recognise their syntax.

Difficulty: medium — expect to hold two interacting rules in your head at once, such as a boundary combined with a mutation.

The challenge

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Keep going

• Output-prediction strategies — how to predict tricky snippets without running them.
• Browse every exceptions problem in this topic.
• Common Python errors and what they actually mean, plus the Python glossary for any term used on this page.