The Path Inward
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 service config nests sections inside sections, and `config` holds one such tree. Given `path`, a list of keys naming a single setting's route from the top level inward, return that setting's value. Return `None` the moment the path can no longer be followed, including when it runs into a plain value before the keys run out.
Summary
Every setting hides a few levels down. Follow the route, or come back empty.
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