Make the Python json encoder support Python's new dataclasses

Question

Starting with Python 3.7, there is something called a dataclass:

from dataclasses import dataclass

@dataclass
class Foo:
    x: str

However, t

Answer 1

I'd suggest creating a parent class for your dataclasses with a to_json() method:

import json
from dataclasses import dataclass, asdict

@dataclass
class Dataclass:
    def to_json(self) -> str:
        return json.dumps(asdict(self))

@dataclass
class YourDataclass(Dataclass):
    a: int
    b: int

x = YourDataclass(a=1, b=2)
x.to_json()  # '{"a": 1, "b": 2}'

This is especially useful if you have other functionality to add to all your dataclasses.