为什么我的 python subclass 无法识别来自 super class 的属性?

Why my python subclass doesn't recognize attribute from super class?

我正在测试 python 的继承,我得到了这个:

__metaclass__=type
class b:
    def __init__(s):
        s.hungry=True
    def eat(s):
        if(s.hungry):
            print "I'm hungry"
        else:
            print "I'm not hungry"
class d(b):
    def __init__(s):
        super(b,s).__init__()
    def __mysec__(s):
        print "secret!"

obj=d()
obj.eat()

运行时错误如下:

Traceback (most recent call last):
  File "2.py", line 17, in ?
    obj.eat()
  File "2.py", line 6, in eat
    if(s.hungry):
AttributeError: 'd' object has no attribute 'hungry'

我无法理解这一点,因为 "b" 的超级 class 在其 init 中有 s.hungry,而子 class 在其自身的“init”中调用 "super" 为什么 python 说 "d" 对象没有属性 'hungry'?

另一个困惑:错误信息将"d"当成对象,但我将其定义为class! 我是不是弄错了什么,如何让它发挥作用?

我想这就是您要找的:

__metaclass__=type
class b:
    def __init__(self):
        self.hungry=True
    def eat(self):
        if(self.hungry):
            print "I'm hungry"
        else:
            print "I'm not hungry"
class d(b):
    def __init__(self):
        super(d,self).__init__()
    def __mysec__(self):
        print "secret!"

obj=d()
obj.eat()
class d(b):
    def __init__(s):
        super(d,s).__init__()
    def __mysec__(s):
        print ("secret!")

Document:

For both use cases, a typical superclass call looks like this:

> class C(B):
>     def method(self, arg):
>         super(C, self).method(arg)