The Depth of Field
A easy Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
A config export arrives as arbitrarily nested lists, but the consumer downstream only handles a fixed number of nesting levels. Collapse `lst` by exactly `depth` levels, preserving order, so a `depth` of 0 returns it untouched and anything still nested below the levels you collapse stays wrapped in its remaining sublists. A `depth` larger than the actual nesting simply flattens as far as the data goes.
Summary
Some containers hold containers that hold containers.
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