相关疑难解决方法(0)

我有一个由外部库提供给我的课程.我已经创建了这个类的子类.我也有一个原始类的实例.

我现在想要将此实例转换为我的子类的实例,而不更改实例已有的任何属性(除了我的子类覆盖的那些属性).

以下解决方案似乎有效.

# This class comes from an external library. I don't (want) to control
# it, and I want to be open to changes that get made to the class
# by the library provider.
class Programmer(object):
    def __init__(self,name):
        self._name = name

    def greet(self):
        print "Hi, my name is %s." % self._name

    def hard_work(self):
        print "The garbage collector will take care of everything."

# This is my subclass.
class C_Programmer(Programmer):
    def __init__(self, *args, **kwargs):
        super(C_Programmer,self).__init__(*args, **kwargs)
        self.learn_C()

    def …