Everything Beneath
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 life-sciences CRM stores customer accounts in a hierarchy: each record names its account `id`, the `parent` account it sits under (`None` for a top-level account), and the `sales` booked directly to it. For every account, report the combined sales of that account together with all the accounts below it, anywhere down the chain. Accounts with no children contribute only their own sales, and the records may describe several independent top-level accounts.
Summary
Every account carries the weight of all it contains.
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