Совет по чистому коду в Python:

Используйте Enum, чтобы логически группировать связанные константы.

from dataclasses import dataclass
from enum import Enum

Плохо:

ORDER_PLACED = "PLACED"
ORDER_CANCELED = "CANCELED"
ORDER_FULFILLED = "FULFILLED"

@dataclass
class Order:
    status: str

order = Order(ORDER_PLACED)
print(order)

Хорошо:

class OrderStatus(str, Enum):
    PLACED = "PLACED"
    CANCELED = "CANCELED"
    FULFILLED = "FULFILLED"

@dataclass
class Order:
    status: OrderStatus

order = Order(OrderStatus.PLACED)
print(order)

👉 @PythonPortal