Python 2.3调用父类(super class)方法

Question

在以下 Python 2.3 脚本中调用基类函数时遇到问题。看完这篇文章后:

Call a parent class's method from child class in Python?

我生成了这段小代码:

class Base(object):

    def func(self):
        print "Base.func"

class Derived(Base):

    def func(self):
        super(Base, self).func()
        print "Derived.func"

Derived().func()

上面的代码会产生这个错误:

Traceback (most recent call last):
  File "py.py", line 13, in ?
    Derived().func()
  File "py.py", line 10, in func
    super(Base, self).func()
AttributeError: 'super' object has no attribute 'func'

我错过了什么？

Answer 1

你应该给super你想要升级的派生类，而不是基类:

super(Derived, self).func()

现在您正在尝试访问 Base 的父类(super class)的 func 方法，它甚至可能不存在。