example for dataclasses_json

dataclasses_json.py

from dataclasses import dataclass
from dataclasses_json import dataclass_json, Undefined
from dataclasses_json.undefined import UndefinedParameterError
from dataclasses_jsonschema import JsonSchemaMixin
from typing import Optional

@dataclass_json(undefined=Undefined.RAISE)
@dataclass
class Info(JsonSchemaMixin):
  conf_one: float
  # conf_two: str
  conf_three: bool
  optional_conf: Optional[str]

@dataclass_json
@dataclass
class ConfStructure:
  version: int
  info: Info
    
    
    my_conf = {
    'version': 1,

    'info': {
        'conf_one': 2.5,
        'conf_two': 'foo',
        'conf_three': False,
        'optional_conf': 'bar'
    }
}
try:
  ConfStructure.from_dict(my_conf).to_dict()
except KeyError as e:
  print('theres a missing parameter')
except UndefinedParameterError as e:
  print('extra parameters')
    
ConfStructure.from_dict(my_conf).to_dict()