从超类调用子类中的类似命名函数 [英] Calling similar named functions in subclasses from superclass

问题描述

此问题中的后续操作，制定的不是很好.答案提供了一些其他的见解，因此现在我构建了一个有限的工作示例，对其进行了更好的解释.

A follow up from this question, which was not very well formulated. The answer provided some additional insight so now I have constructed a limited working example that explains it better.

基本上，我们有两个子类 A 和 B 和一个继承自这两个子类的 C .类 A 和 B 都具有函数 MyFunc ，但功能不同.

Basically we have two subclasses A and B and a class C which inherits from both. Classes A and B both have a function MyFunc but which does different things.

我希望类 C 能够使用这两个函数，并且能够完全控制调用哪个函数，因为我希望对每个函数做不同的事情.下面的有限工作示例中的注释显示了我正在尝试做的事情.

I would like for class C to be able to use both functions and have full control of which function is called since I wish to do different things with each function. The comment in the limited working example below shows what I am trying to do.

    class A():
        def __init__(self, var1, var2):
            self.var1 = var1
            self.var2 = var2
        def MyFunc(self):
            result = self.var1 + self.var2
            return result
    
    class B():
        def __init__(self, var1):
            self.var1 = var1
        def MyFunc(self):
            result = self.var1**2
            return result
    
    class C(A,B):
        def __init__(self, var1, var2, var3):
            A.__init__(self, var1, var2)
            B.__init__(self, var3)
        def MyFunc(self):
            #in this function I want to call MyFunc from A and MyFunc from B. For example to add their results together

如何从 MyFunc A 中的 MyFunc 和 B 中的 MyFunc >在 C 中?

How can I call MyFunc in A and MyFunc in B from MyFunc in C?

推荐答案

您可以使用名称修饰来使子类中的类的属性可用，即使该子类定义了具有相同名称的属性.

You can use name mangling to make attributes from a class available in a child class even if that child defines an attribute with the same name.

class A():
    def __init__(self, var1, var2):
        self.var1 = var1
        self.var2 = var2
    def __MyFunc(self):
        result = self.var1 + self.var2
        return result
    MyFunc = __MyFunc

class B():
    def __init__(self, var1):
        self.var1 = var1
    def __MyFunc(self):
        result = self.var1**2
        return result
    MyFunc = __MyFunc

class C(A,B):
    def __init__(self, var1, var2, var3):
        A.__init__(self, var1, var2)
        B.__init__(self, var3)
    def MyFunc(self):
        return self._A__MyFunc() + self._B__MyFunc()

c = C(1, 2, 3)
print(c.MyFunc())
# 14

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