Metaclass to ease creation of DTOs and hook compatibility with json.loads for easy deserialization

helper.py

class Dto(type):

    def __new__(self,name,bases,at_dict,attributes):
        at_dict["_properties"] = attributes
    
        def init(self,**kwargs):
            for _property in attributes:
                received_value = kwargs.get(_property.name)
                if received_value is not None:
                    if isinstance(received_value,_property.type):
                        self.__dict__[_property.name] = received_value
                    else:
                        raise TypeError(f'"{_property.name}" parameter is of wrong type.')
                else:
                    raise ValueError(f'"{_property.name}" parameter is not received')
    
        def rep(self):
            return(str(self.__dict__))
    
        @classmethod
        def hook(cls,properties):
            return cls(
                **properties
            )
        
        at_dict["__init__"] = init
        at_dict["__repr__"] = rep
        at_dict["hook"] = hook
        return type(
            name,
            bases,
            at_dict
        )