Code RoomCopy warning hides label mutation
MediumPrep Room Coding #4219

Copy warning hides label mutation

Vibe & agenticDatabases & SQLMid–Senior~14 min

An AI wrote this label-fixup before training. It emits a SettingWithCopyWarning that the assistant told you to ignore, and downstream the corrected labels seem not to stick. Diagnose it.

Implement
relabel_train_split(splits: list[str], labels: list[int], raw_scores: list[float], threshold: float) → list[int]
Examples
in[["train","test","train","train"],[0,0,0,1],[0.95,0.99,0.5,0.2],0.9]out[1,0,1]
in[["val","test"],[1,0],[0.99,0.95],0.9]out[]
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 14 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.