>>> obj.val

Itis easy to add default values to the fields of your dataclass.

>>>@dataclass

...class Product:

... name:str

... count:int=0

... price:float=0.0

>>>obj= Product("Python")

>>> obj.name

Python

>>> obj.count

>>> obj.price

Itis mandatory to define the datatypein dataclass. However, If you don't want specify the datatype then, use ```typing.Any```.

>>>from dataclassesimport dataclass

>>>from typingimport Any

>>>@dataclass

...class WithoutExplicitTypes:

... name: Any

... value:Any=42