architect_v1.py

from dataclasses import dataclass
from typing import List

@dataclass
class Room:
    name: str
    length: int
    width: int
    height: int
    
    def area(self) -> int:
        return self.length * self.width
    

class House:
    def __init__(self, rooms: List[Room]):
        self.rooms = rooms
    
    def area(self) -> int:
        return sum(room.area() for room in self.rooms)


house = House([])