Extract Leaf Values

A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Seniority

L4

Problem

A service's runtime configuration arrives as a nested dict `config` where each value is either a subsection (another dict) or a plain setting value at the bottom. Return every plain setting value in one flat list, ordered by where it sits: read each dict's keys top to bottom, and a subsection's values come out before the values of any sibling keys that follow it.

Summary

The tree has leaves. Pluck them.

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