Vibe codingMediumvc-g284

Subject Ai refactor migrationLevel Mid–Senior~20 minCommon in Code quality & review interviewsIndustries Software development

Question

A legacy Python 2 service that ingests files from external partners needs to move to Python 3. You ask an AI agent to run the conversion. It applies the standard transforms and the test suite (which uses ASCII fixtures) goes green. Why are you not safe yet, and what specifically do you test before cutting over?

What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.

Learn the concepts

Describe your solution

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.