Let me help you two out: ABCs are like interfaces in they can be used to enforce properties (like the presence of particular functions) of a class that extends

Let me help you two out: ABCs are like interfaces in they can be used to enforce properties (like the presence of particular functions) of a class that extends/impliments them; BUT, interfaces can also be used to enforce a particular variable always refers to something with certain properties (without worrying about what it is concretely).