如何在Python中附加类的实例，然后提取实例的属性？

Question

我正在制作一个文本冒险游戏。

我创建了一个类，并创建了该类的几个不同实例。这个类有很多属性。我试图将类的每个实例附加到一个列表中。然后我希望能够从列表中的一个实例中提取一个属性。

我被告知要实施：

不要让每个房间都是[description，north，east，south，west]的列表，而是创建一个房间类。该类应该有一个构造函数，该构造函数接受（description，north，east，south，west）并设置描述字段和所有方向。让程序使用新类

这是我到目前为止的代码：

room_list = []

class Room():
    def __init__(self, describe, nw, n, ne, e, se, s, sw, w):
        self.description = describe
        self.northwest = nw
        self.north = n
        self.northeast = ne
        self.east = e
        self.southeast = se
        self.south = s
        self.southwest = sw
        self.west = w

kitchen = Room("You are in the Kitchen. Look at the scrumptious roast chicken and kidney pudding! \nThere are doors leading to North, East, and West.", None, 4, None, 2, None, None, None, 0)

room_list.append(kitchen)

east_cooridor = Room("You apparated into the East Corridor. \nYou can apparate to the Northwest or the Southwest.", 8, None, None, None, None, None, 2, None)

room_list.append(east_cooridor)

great_hall = Room("You are in the Great Hall. What is that great smell? \nThere appears to be doors leading to the north and the south.", None, 7, None, None, None, 1, None, None)

room_list.append(great_hall)

west_cooridor = Room("You apparated into the West Corridor. \nYou can apparate to the Northeast or the Southeast.", None, None, 6, None, 0, None, None, None)

room_list.append(west_cooridor)

owlery = Room("You are in the Owlery. WHOOs got mail? There is a glass door overlooking the Forbidden Forest. \nThere are doors in every direction.", None, 9, None, 8, None, 4, None, 6)

room_list.append(owlery)

forbidden_forest = Room("Yikes! You are in the Forbidden Forest! Is that a dead unicorn? ...Or is it Aragog? \nGet back into the Owlery, quick! \nOf course...if you wanted to explore the forest more, you could certainly try!", None, None, None, None, None, 7, None, None)

room_list.append(forbidden_forest)

current_room = 4
while done == False:
    print(room_list[current_room][0])

最后一行代码出错并显示：内置。TypeError:“房间”对象不支持索引

取而代之的是，我想让它从猫头鹰房里抽出“你在猫头鹰房里。谁收到邮件了？有一扇玻璃门可以俯瞰禁林。四面八方都有门”这句话。

到目前为止，我所尝试的都没有成功。如果有任何可能的建议，我将不胜感激。非常感谢。

Answer 1

听起来你不太明白属性是如何工作的。类中的属性通常不能作为数组访问。例如，如果要打印房间的描述，应显式调用属性：

current_room = 4
while not done:  # In python, "not done" is preferred over "done == False"
    print(room_list[current_room].description)