Python 3 Object-Oriented Programming - Third Edition

Making it do something

Now, having objects with attributes is great, but object-oriented programming is really about the interaction between objects. We're interested in invoking actions that cause things to happen to those attributes. We have data; now it's time to add behaviors to our classes.

Let's model a couple of actions on our Point class. We can start with a method called reset, which moves the point to the origin (the origin is the place where x and y are both zero). This is a good introductory action because it doesn't require any parameters:

class Point: 
    def reset(self): 
        self.x = 0 
        self.y = 0 
 
p = Point() 
p.reset() 
print(p.x, p.y) 

This print statement shows us the two zeros on the attributes:

0 0  

In Python, a method is formatted ...