从python中的基类继承namedtuple [英] Inherit namedtuple from a base class in python

问题描述

是否可以生成一个继承自基类的 namedtuple ？

Is it possible to produce a namedtuple which inherits from a base class?

我想要的是 Circle 和 Rectangle 是 namedtuple s并且继承自公共基类（'Shape'）：

What I want is that Circle and Rectangle are namedtuples and are inherited from a common base class ('Shape'):

from collections import namedtuple

class Shape:
    def addToScene(self, scene):
         ...

Circle=namedtuple('Circle', 'x y radius')
Rectangle=namedtuple('Rectangle', 'x1 y1 x2 y2')

我该怎么做？

推荐答案

你可以试试这个：

class Circle(Shape, namedtuple('Circle', 'x y radius')):

    pass

（您应该考虑添加 __ slots __ 到您的所有三个类，以节省内存和快速查找。）

(You should consider adding __slots__ to all your three classes to save memory and for sightly faster lookups.)

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