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Vibe codingHardvc-g550
Subject Ai code reviewLevel Mid–Senior~17 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

An AI agent wrote this Python helper to show 'when an event starts' for a global scheduling app. It works in the developer's tests, who happens to be in UTC. What's wrong for real users, and how should it be done?

python
from datetime import datetime def format_start(event):    dt = datetime.fromtimestamp(event['start_ts'])    return dt.strftime('%m/%d/%Y %I:%M %p')
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.

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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.