使用属性重写资源库：类型错误：'int'对象不可调用

Question

我收到以下错误：

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

我看到后类方法TypeError"Int对象不可调用"，但它对我没有帮助

Answer 1

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

Answer 2

我得出的最好的是：

1. 如果不需要覆盖 getter，那么您可以按父类名作为前缀

2. setter 中没有代码：setter只调用其他方法

   2.a 执行二传手指令的已定义实例方法

   2.b 由二传手调用

   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：

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