Quick Check: Python JSON

Check your understanding of JSON serialization, deserialization, JSON files, mappings, and invalid input.

5 questions ~5 min

Knowledge check

Check your understanding of JSON serialization, deserialization, JSON files, mappings, and invalid input.

You can retake this quiz whenever you like.

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What does json.dumps(data) return?

dumps() serializes the Python value into a JSON-formatted str.
When should you use json.loads()?

loads() deserializes JSON text supplied as a Python string.
Which pair is intended for writing and reading JSON directly through a file object?

dump() writes a serialized JSON value to a file-like object, while load() reads JSON from one.
Which Python value maps to JSON null by default?

Python None is serialized as JSON null.
What exception does json.loads() raise for invalid JSON text?

Invalid JSON causes json.JSONDecodeError.

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What does json.dumps(data) return?