test_greenlet.py 文件源码

def test_abstract_subclasses(self):
            AbstractSubclass = ABCMeta(
                'AbstractSubclass',
                (greenlet,),
                {'run': abstractmethod(lambda self: None)})

            class BadSubclass(AbstractSubclass):
                pass

            class GoodSubclass(AbstractSubclass):
                def run(self):
                    pass

            GoodSubclass() # should not raise
            self.assertRaises(TypeError, BadSubclass)