write a class called NotchNode in python

the required attributes are

key : is a Notch object

name: is a string

x : is the x child NotchNode or none

y: is the y child notchNode or none

parent : the parent NotchNode or none

__init__(self,key,name,x=None,y=None,parent=None) :

this should save all the arguments as attributes of the same names

and

set_x(self,other)

take another NotchNode , other and then make it the x child of this node and also make this node the parent of other

and

set_y(self,other)

take another NotchNode , other and then make it the y child of this node and also make this node the parent of other