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The Lazy Unpacker
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
- mid, senior
Interview Prompt
A memory-efficient ETL pipeline needs to stream values out of deeply nested structures without loading everything into memory. Given a nested list of arbitrary depth, implement a generator that yields each non-list element one at a time. Return the result as a list for testing.
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