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The Event Broadcaster
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, senior
Interview Prompt
A notification system needs to allow components to subscribe to named events and receive callbacks when those events fire. Implement an EventEmitter class with on (subscribe), emit (fire), and off (unsubscribe) methods. Multiple listeners can be registered for the same event.
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