Python 3 Object-Oriented Programming - Third Edition

Talking to yourself

The one difference, syntactically, between methods and normal functions is that all methods have one required argument. This argument is conventionally named self; I've never seen a Python programmer use any other name for this variable (convention is a very powerful thing). There's nothing stopping you, however, from calling it this or even Martha.

The self argument to a method is a reference to the object that the method is being invoked on. We can access attributes and methods of that object as if it were any another object. This is exactly what we do inside the reset method when we set the x and y attributes of the self object.

Pay attention to the difference between a class and an object in this discussion. We can ...