method (instance), @classmethod and @staticmethod

In a class we can have method, normal method without decorator. We also can have classmethod and staticmethod.

the normal method is a method that is bound to the instance. It has self as its first argument.
classmethod is bound to the class itself. It's usually used as a factory. It has cls as its first argument.
staticmethod is not bound to either instance or class. It's a general function and it doesn't have either self or cls as its argument.

>>> class Shape: ... def __init__(self, name, height, width): ... self.name = name ... self.height = height ... self.width = width ... def __str__(self): ... return f"shape: {self.name}, height: {self.height}, {self.width}" ... @staticmethod ... def area(height, width): ... return height * width ... @classmethod ... def rectangular(cls): ... return cls("rectangular", height, width) ... @classmethod ... def square(cls): ... return cls("square", height, height) 

wait, is my code correct...?