The Fine Print
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
Interview Prompt
A trade-surveillance system screens transaction `records` against a `query`, a predicate tree whose leaf nodes compare one field to a value with `>`, `>=`, `<`, `<=`, `==`, or `!=`, and whose interior nodes nest `and`, `or`, and `not` to any depth. Return the records that satisfy the whole tree, keeping them in their original order. A leaf comparison is false for any record that lacks the field it names.
Summary
Risk rules nest deep. Decide which transactions clear 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