继承和基类方法调用python [英] Inheritance and base class method call python

问题描述

我希望基类中的方法在同一个类中调用另一个方法，而不是在继承的类中调用重写方法。
我希望以下代码打印出来

I would like a method in a base class to call another method in the same class instead of the overriding method in an inherited class. I would like the following code to print out

B类：6

A类： 9

可以这样做吗？

# Base class definition
class ClassA(object):
    def __init__(self):
        print("Initializing A")

    # hoping that this function is called by this class's printFnX
    def fnX(self, x):
        return x**2

    def printFnX(self, x):
        print("ClassA:",self.fnX(x))

# Inherits from ClassA above
class ClassB(ClassA):
    def __init__(self):
        print("initizlizing B")

    def fnX(self, x):
        return 2*x

    def printFnX(self, x):
        print("ClassB:", self.fnX(x))
        ClassA.printFnX(self,x)

bx = ClassB()
bx.printFnX(3)

推荐答案

同样可以通过 fnX 和 printFnX 两个classmethods。

The same can be achieved by making fnX and printFnX both classmethods.

class ClassA(object):

    def __init__(self):
        print("Initializing A")

    # hoping that this function is called by this class's printFnX
    @classmethod
    def fnX(self, x):
        return x ** 2

    @classmethod
    def printFnX(self, x):
        print("ClassA:",self.fnX(x))

class ClassB(ClassA):
    def __init__(self):
        print("initizlizing B")

    def fnX(self, x):
        return 2*x

    def printFnX(self, x):
        print("ClassB:", self.fnX(x))
        ClassA.printFnX(x)


bx = ClassB()<br>
bx.printFnX(3)

这篇关于继承和基类方法调用python的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！