The Change Tracker
A medium 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
- medium
- Seniority
- L3
Interview Prompt
An analyst is reconciling two snapshots of the same user table, `old_records` and `new_records`. Report the ids that were added, removed, and modified between them, each list lowest id first.
Summary
Before and after snapshots. The delta is in there.
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