Python serializable type that allow dot notation access

struct.py

import json
from json import JSONEncoder
from typing import Iterator, Mapping


class StructEncoder(JSONEncoder):
    def default(self, o):
        return o.__dict__ if isinstance(o, Struct) else super().default(o)


class Struct(Mapping):
    def __init__(self, **kwargs):
        for key, value in kwargs.items():
            if isinstance(value, dict):
                self.__dict__[key] = Struct(**value)
            elif isinstance(value, list):
                self.__dict__[key] = [
                    Struct(**item) if isinstance(item, dict) else item for item in value
                ]
            else:
                self.__dict__[key] = value

    def __getitem__(self, k):
        pass

    def __len__(self) -> int:
        pass

    def __iter__(self):
        pass


some_dict = {
    "a_list": [
        {
            "a_nested_list": ["wow"]
        }
    ],
    "just_a_value": True,
    "an_object": {
        "a_nested_object": {
            "a_nested_object_with_a_nested_list": [
                "you got it!"
            ]
        }
    }
}

my_struct = Struct(**some_dict)

print(json.dumps(my_struct, indent=2, cls=StructEncoder))

# Prints:
# {
#   "a_list": [
#     {
#       "a_nested_list": [
#         "wow"
#       ]
#     }
#   ],
#   "just_a_value": true,
#   "an_object": {
#     "a_nested_object": {
#       "a_nested_object_with_a_nested_list": [
#         "you got it!"
#       ]
#     }
#   }
# }

print(my_struct.an_object.a_nested_object.a_nested_object_with_a_nested_list[0] == "you got it!")
# True