classmethod in python?

Question

What is classmethod and staticmethod inn python(@classmethod or @staticmethod)?
Why we use this methods?

Answer 1

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 staticmethod can have no parameters at all.
See the link for more.
https://stackoverflow.com/questions/12179271/meaning-of-classmethod-and-staticmethod-for-beginner