Python descriptors

descriptors.py

class classmethod(object):
    def __init__(self, func):
        self.func = func

    def __get__(self, instance, klass):
        if klass is None:
            klass = type(instance)

        def newfunc(*args, **kwargs):
            return self.func(klass, *args, **kwargs)
        return newfunc

    def __call__(self, func):
        return classmethod(func)


class staticmethod(object):
    def __init__(self, func):
        self.func = func

    def __get__(self, *_):
        return self.func

    def __call__(self, func):
        return staticmethod(func)