Pull Data from an API | Dataford Interview Questions

Write code to pull data from an API.

Asked in the Round 1 stage as a practical scripting task for a Mandiant security validation role. Implement the pagination and record-processing logic using simulated API responses.

Input and Output

Implement pull_data(pages). pages is a list of response objects in request order. Each response contains an items array of objects and a next field. next is either a string identifying another page or null. Return one array containing records from all pages, removing duplicate records by their id while preserving the first-seen order. Stop after the first page whose next value is null.

Constraints

0 <= pages.length <= 10^4
Each record contains an integer id
Each page contains an items array and a next field
next is either a string or null
The first occurrence of each id must be preserved

Function Signature

def pull_data(pages):

Your question is Pull Data from an API. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem