Until now we have been using Python as a structured language. Each line is executed one after the other. If we want to reuse code, we create functions. There is another way to program called object-oriented programming. In object-oriented programming we create little objects that not only hold our data but group the operations – the things we want to do with that data – with the data itself. The main features of object-oriented programming, or OOP for short, are
Encapsulation
Abstraction
Inheritance
Polymorphism
The next two chapters will cover ...
