The Flat Mapper
An easy Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
Our downstream aggregator keeps rejecting the metrics export because some entries are a single integer reading while others are a list of readings a device sent together. Unpack the export into one flat list of readings.
Summary
Nested values. One flat stream out.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your Python against test cases
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision