from typing import List
from dataclasses import dataclass
from airyconf import parse


class CustomObject(object):
    def __init__(self, a: float):
        self.a = a
    
    def __eq__(self, other):
        return isinstance(other, CustomObject) and other.a == self.a

@dataclass
class SomeDataclass:
    b: str
    c: List[CustomObject]

json_config = '{"SomeDataclass": {"b": "str", "c": [{"a": 1.0}, {"a": 2.0}]}}'

expected = SomeDataclass('str', [CustomObject(1.), CustomObject(2.)])

assert parse(json_config, SomeDataclass) == expected

from airyconf import parse_config
parse_config('file/to/config.yaml', SomeDataclass)