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The DAG Executor
A hard Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- hard
- Seniority
- staff
Interview Prompt
The team needs a lightweight executor that can run a graph of data tasks in the right order, feeding each task's output into the tasks that depend on it. Build a function that takes a dictionary of task definitions with functions and dependencies, executes them, and returns all outputs.
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