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Batch Partitioner

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

Interview Prompt

A partitioning step routes records to different downstream workers based on a partition key field. Return a dict mapping each distinct value of the key field to the list of records that share it.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your python solution with real code execution
  4. Get instant feedback and a hire/no-hire decision