A quick way to have your class be serializable to json in a nested way

JsonSerializable mixin

from json import dumps
from copy import deepcopy

class JsonSerializable:

    @staticmethod
    def _to_json(item):
        if isinstance(item, JsonSerializable):
            return item.json

        if isinstance(item, list):
            return list(map(JsonSerializable._to_json, item))

        if isinstance(item, dict):
            return {k: JsonSerializable._to_json(v) for k, v in item.items()}

        return item

    @property
    def json(self):
        return dumps({k: JsonSerializable._to_json(v) for k, v in self.__dict__.items()})