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JSON to Python Class (Dataclass / Pydantic)

Generate Python dataclasses or Pydantic models from sample JSON, with type hints.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Type hints (str, int, List[…]) tell editors and tools what each field holds. Pydantic also validates incoming data.

How to use it (step by step)

  1. 1Type or paste your text into the “Sample JSON” box. There is already an example in it so you can see how it works; press Clear to start with your own.
  2. 2Choose your settings: “Style”, “Root class name”.
  3. 3The answer appears right away in the “Python code” box. No button needed.
  4. 4Press Copy and paste the result wherever you need it.

Words to know

JSON
A common text format apps use to store and send data, made of names and values in { } brackets.
Struct / class / schema
A description of the shape of data: which fields it has and what type each one is (text, number, list…).
Array / list
An ordered collection of items, like ["apple", "banana"]. Every programming language has one.

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