Python data class

data_class.py

from dataclasses import dataclass


@dataclass()
class Hobby:
    name: str = None


@dataclass()
class Student:
    name: str = None
    age: int = None
    hobby: [Hobby] = None


if __name__ == "__main__":
    h = Hobby()
    h.name = "swimming"

    s = Student()
    s.name = "John toer"
    s.age = 18
    s.hobby = [h.__dict__]
    result = s.__dict__
    # result is
    # {'name': 'John toer', 'age': 18, 'hobby': [{'name': 'swimming'}]}
    print(result)