The One-of-Each

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

Domain

Python

Difficulty

easy

Seniority

L3

Problem

Given a list of dicts (records) and a key name, return a new list containing the first occurrence of each distinct value at that key. Records that do not have the key are kept in order (they are not deduplicated against each other).

Summary

Strip the repeats, keep the originals.

Practice This Problem

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