Hidden Depths
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
A config loader returns settings as a flat dict whose keys encode their depth with dots, like `a.b.c` for a value three levels down. Return the equivalent nested dict, where each dot-separated segment of a key becomes one level deeper and the value lands at the end of its path; a key with no dots stays at the top level.
Summary
Each dot marks a level. Rebuild the tree it stands for.
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