The Timezone Trap
A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
Given a list of trip dicts (each with 'city', 'status', 'completed_utc' in ISO format with 'Z'), filter to city='San Francisco' AND status='completed'. Convert completed_utc to Pacific time (UTC-8 fixed, ignoring DST for simplicity). Per YYYY-MM (in Pacific time), count completions. Return a dict {year-month: count}.
Summary
Trip data and timezones. They're not the same thing.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision