Question

我遇到以下错误：

Traceback (most recent call last):
  File ".../TEST.py", line 34, in <module>
    b.level = 12    # Error
  File ".../TEST.py", line 23, in level
    super().level(self, new_level)
TypeError: 'int' object is not callable

这是代码：

class A:
    def __init__(self):
        self._level = 0

    @property
    def level(self):
        return self._level

    @level.setter
    def level(self, new_level):
        self._level = new_level

class B(A):
    def __init__(self):
        super().__init__()

    @property
    def level(self):
        return self._level

    @level.setter
    def level(self, new_level):
        super().level(self, new_level)



a = A()
print(a.level)  # --> 0
a.level = 12
print(a.level)  # --> 0

b = B()
print(b.level)  # --> 12
b.level = 12    # Error
print(b.level)  # never reached

我看到了该帖子class method TypeError "Int object not callable"，但对我没有帮助

Answer 1

Python属性是非多态的： https://www.artima.com/forums/flat.jsp?forum=122&thread=153649

Answer 2

我能想到的最好的是：

如果不需要覆盖getter，则可以按父类名称前缀

setter中没有代码：setter只调用其他方法

2.a执行setter指令的已定义实例方法

2.b由设置员调用

class A:
    def __init__(self):
        self._level = 0

    def A_level_setter(self, new_level):      # 2.a
        print('Setter instructions of A')
        self._level = new_level

    @property
    def level(self):
        return self._level

    @level.setter
    def level(self, new_level):
        self.A_level_setter(new_level)        # 2.b

class B(A):
    def B_level_setter(self, new_level):      # 2.a
        print('Setter instructions of B')
        self.A_level_setter(new_level)

    @A.level.setter                           # 1.
    def level(self, new_level):
        self.B_level_setter(new_level)        # 2.b

class C(A):
    pass


a = A()
print(a.level)  # 0
b = B()
print(b.level)  # 0
c = C()
print(c.level)  # 0


a.level = 1     # Setter instructions of A
print(a.level)  # 1

b.level = 2     # Setter instructions of A
                # Setter instructions of B
print(b.level)  # 2

c.level = 3     # Setter instructions of A
print(c.level)  # 3

Answer 3

另一个答案似乎是最好的答案：

class B(A):
    @A.level.setter
    def level(self, new_level):
        super(B, type(self)).level.fset(self, new_level)

具有属性的重写setter：TypeError：'int'对象不可调用

3 个答案: