实例化子类的正确方法? [英] Proper way to instantiate subclasses?

问题描述

所以我正在做一个小型的Pygame程序，并且试图以一种体面的外观来构造这些东西，这就是我所坚持的地方.

So I'm doing a small Pygame programm and I'm trying to structure the stuff in decent look, this is where I stucked.

class Screen(object):
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.SURFACE = 10 # I need this attribute

class GameMenager(Screen):
    def __init__(self) # Do I need to put the parameters of the super class here?
        super().__init__() # What to put in these parantheses?

我想获得 SURFACE 属性，以便可以在Game类中使用它，与标注属性相同.实例化类 Screen 和 GameMenager 的正确方法是什么?

I want to get the SURFACE attribute so I can work with it in the Game class, same with the dimension attributes. What is the proper way to instantiate the classes Screen and GameMenager?

我对 super()表示红色，但是实际上我没有找到关于在子类中没有参数时如何实例化子类的更多信息.

I red about super() but didn't actualy find much information on how to instantiate subclasses when I don't have parameters in the subclass.

推荐答案

super 的用法如下:

super is used like this:

class Screen(object):
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.SURFACE = 10

class GameMenager(Screen):
    def __init__(self, width, height):
        super(GameMenager, self).__init__(width, height)

现在，您可以访问 Screen.SURFACE :

>>> x = GameMenager(1, 2)  # I just picked 1 and 2 for width and height.
>>> x.SURFACE
10
>>>

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