Python面向对象、类和实例

Question

我目前正在学习面向对象编程中的Python，我有一个关于使用list作为类属性的问题。问题是，当我更改对象中的某些内容时，它也会更改class属性。

class Backet:
   number_of_stone = 0
   stone_collection = []
   
   def __init__(self,name):
      self.name = name
      self.number_of_stone +=1
      self.stone_collection.append(self.name)

stone_one = Backet('One')
stone_two = Backet('Two')

当我打印出stone_one和stone_two.number_of_two时，它们是=1(我知道这是正确的)。但是当我打印stone_one和stone_two.stone_collection时，它们都给出了一个列表["One","Two"]。

我的问题是，应该是stone_one.stone_collection = ['One']和stone_two.stone_collection = ['Two']吗

Answer 1

将stone_collection更改为实例变量：

class Backet:
   def __init__(self, name):
      number_of_stone = 0
      stone_collection = []
      self.name = name
      self.number_of_stone +=1
      self.stone_collection.append(self.name)

stone_one = Backet('One')
stone_two = Backet('Two')