our Classes The Drawable Class In this week's lecture we discussed how we can used object oriented programming concepts to make graphics applications more organized and easier to create. One of the things that we'll leverage is inheritance, polymorphism, and abstract base classes. We have included drawable. py that contains an abstract base class called (shocker) Drawable This class has the following methods: A constructor (__init__) method where you can set the x and y locations for your object. Accessor and mutator methods for the x and y locations. An abstract method called draw that takes a surface to draw on as a parameter.