The Shortest Path Home
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
- L3
Interview Prompt
API responses arrive as dicts nested arbitrarily deep, and the warehouse needs them as single-level rows. Collapse `nested` into a flat dict whose keys trace the full path down to each leaf value, joined by `separator`.
Summary
Every leaf remembers the road it came from. Bring them all back on one line.
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