Who Gets In
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
- L5
Interview Prompt
A permission service replays a stream of access changes: `grant` and `revoke` add or drop a single permission for one user, `check` asks whether a user currently holds a given permission, and `update_config` hands over a whole user-to-permissions mapping that replaces every permission on record. Most operations name an action, a user, and a permission, but `update_config` carries only the action and the mapping. Return the boolean answer to each `check` in order, and treat a user you have never seen as holding nothing.
Summary
When the roster changes, does access follow?
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