面相对象程序设计中，类方法和静态方法是经常用到的两个术语。
逻辑上讲：类方法是只能由类名调用；静态方法可以由类名或对象名进行调用。
python staticmethod and classmethod
Though classmethod and staticmethod are quite similar, there's a slight difference in usage for both entities: classmethod must have a reference to a class object as the first parameter, whereas st
