from dataclasses import dataclass

@dataclass
class Device:
    access_key: str
    device_type: str
    name: str

    def to_dict(self):
        return {
                'access_key': self.access_key,
                'type': self.device_type,
                'name': self.name
               }

    def convert(device_from_db) -> Device:
        return Device(*device_from_db)

@dataclass
class SimCard:
    phone_number: str
    device_access_key: str

    def to_dict(self):
        return {
                'phone_number': self.phone_number,
                'device_access_key': self.device_access_key
               }

    def convert(sim_from_db) -> SimCard:
        return SimCard(*sim_from_db)