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Code RoomPython 2 to 3 encoding
MediumPrep Room Coding #4687

Python 2 to 3 encoding

Vibe & agenticCode quality & reviewMid–Senior~20 min

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?

Implement
classify_partner_payload(byte_values: list[int]) → str
Examples
in[[]]out"empty"
in[[72,101,108,108,111]]out"ascii"
in[[67,97,102,195,169]]out"utf8"
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.

0:00 of about 20 min

Vibe & agentic: describe the solution in plain language (or narrate it) and the coach grades your approach.

Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.