Parsing Ownership JSON to UBOs | Dataford Interview Questions

Write a Python function to parse a deeply nested JSON payload containing corporate ownership structures and return a flat list of ultimate beneficial owners (UBOs). The input is a decoded Python dictionary with an ownership array. Each node has type, name, and, for companies, an owners array; person nodes are UBOs. Return unique person names in depth-first, left-to-right order. Assume the payload is valid and contains no cycles.

Constraints

The input is a valid decoded JSON object.
The top-level object contains an ownership array.
Each node has type and name fields.
A person node has type equal to person.
A company node may contain an owners array.
The ownership structure contains at most 10^4 nodes.
The ownership structure contains no cycles.

Function Signature

def parse_ubos(payload):

Your question is Parsing Ownership JSON to UBOs. Start with the requirements in the Question tab.

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Problem

Constraints

The input is a valid decoded JSON object.
The top-level object contains an ownership array.
Each node has type and name fields.
A person node has type equal to person.
A company node may contain an owners array.
The ownership structure contains at most 10^4 nodes.
The ownership structure contains no cycles.

Function Signature

def parse_ubos(payload):

Your question is Parsing Ownership JSON to UBOs. 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.