Extract Leaf Values
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 nested dict (leaves are any non-dict values), return a flat list of leaves in depth-first traversal order of the keys. Within a dict level, iterate keys in insertion order.
Summary
The tree has leaves. Pluck them.
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