python中的动态方法绑定

Question

我有以下两门课A和B。如何使do_someting（）方法调用B中的重写方法some_method（）。这在Python中可行吗

class A:
    @staticmethod
    def some_method()
        # pass
        return

    @classmethod
    def do_something():
        A.some_method()
        ...
        return

class B(A):
    @staticmethod
    def some_method()
        # how does do_something call here?
        return

    @classmethod
    def run()
        B.do_something()
        return

Answer 1

这很简单，只要确保在self和cls中修复冒号传递：

class A:
    @staticmethod
    def some_method():
        # pass
        return

    @classmethod
    def do_something(cls):
        cls.some_method()
        return

class B(A):
    @staticmethod
    def some_method():
        print("I did stuff!")
        return

    @classmethod
    def run(cls):
        B.do_something()
        return

k = B()
k.run()
>>>"I did stuff!"

如果您想从类B调用旧的do_something（类A中的那个），只需传入适当的类。B类：

@classmethod
def run(cls):
    A.do_something()
    return