JSON Parsing With Edge Cases | Dataford Interview Questions

Write a function to parse a JSON object and handle potential edge cases.

Implement parse_json_object(json_text), which accepts a string and returns a Python dictionary for a valid JSON object. Return None for malformed JSON, empty or whitespace-only input, valid JSON values that are not objects, duplicate keys, or non-standard constants such as NaN. Nested objects and arrays are valid values. For example, '{"a": 1}' returns {"a": 1}, while '[1, 2]' returns None.

Constraints

json_text is expected to be a Python string or a non-string invalid input.
The input may contain nested objects and arrays.
A successful result must have a JSON object at the top level.
Return None for malformed JSON, duplicate keys, non-object top-level values, and non-standard constants.

Function Signature

def parse_json_object(json_text):

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Problem

Write a function to parse a JSON object and handle potential edge cases.

Constraints

json_text is expected to be a Python string or a non-string invalid input.
The input may contain nested objects and arrays.
A successful result must have a JSON object at the top level.
Return None for malformed JSON, duplicate keys, non-object top-level values, and non-standard constants.

Function Signature

def parse_json_object(json_text):

Your question is JSON Parsing With Edge Cases. 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.