All the Way Down

A medium Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.

Domain
Python
Difficulty
medium
Seniority
L4

Interview Prompt

A config export arrives as a list whose entries are either plain values or further lists, nested to any depth with no fixed structure. Collapse it into a single flat list of all the values, in the order they appear.

Summary

However deep it nests, every leaf belongs on one line.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your Python against test cases
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision