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First of all, OOP is everywhere in Python. And to

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get the proof of that, let's just come back to

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what we have used before. If you remember, when we

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use type, for example, with an integer value. We

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get class int, you can do type with string value,

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for example test here, you get class str. You can

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see here the keyword class, which is directly

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related to object oriented programming. I am going

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to explain what a class is in just a moment. But

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for now, you can see that even the most basic

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Python data types are actually using OOP. And this

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is going to be the same for most of the Python

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modules you are going to use. Now let's understand

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what is OOP. So object oriented programming is a

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way of organizing your code into what we call

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classes. A class is basically a structure you can

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use to then create an object in your code. And

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what do you put inside the class? Well, two kinds

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of things. Variables and functions, which are of

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course related to the class. And let's see with an

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example, actually, because I don't want to lose

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you with too much theory. Because I like robots,

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and I mainly work with robotics programming, let's

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use a robot as an example. This will change from

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the classic animal, or vehicle class example,

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which is always the same in every tutorial, and

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which you're probably never going to use in real

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life. So let's say you want to code the behavior

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for a robot. And we're going to stay at very high

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level here for the example. So we do think about

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what kind of attributes a robot can have. For

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example, the name, the version number, the

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internal temperature of the robot, etc, etc. Let's

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keep it short. And then what functionalities the

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robot has. So for example, the robot can say hi,

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with the speaker, or just a string, it doesn't

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really matter here. Okay, so the robot can say hi,

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and say its name. Then the robot can also print

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all its internal information, including the name,

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version, number, temperature, etc. The robot can

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also initialize its hardware, and well, many more

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functionalities you can add when you need them. Here

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I keep it super basic and high level, we have a

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limited number of functionalities. But this is so

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we can focus 100% on understanding our topic. So

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we have defined attributes and functionalities for

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the robots. Now, if you want to implement that

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with Python code, you're going to create some

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variables for the first part, and some functions

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for the second part. So nothing new for now. Well,

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if you create a Robot class, you're simply going

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to group those variables and functions inside one

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structure that you're going to name Robot. And in

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a class, instead of using the word variable,

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we're going to use the word attribute and instead

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of function, we are going to use method. This is a

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quite useful convention to avoid confusions. Okay.

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So for example, here, the name of the Robot is a

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class attribute, and the init_hardware function is

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a class method. Now, as you can see, creating a

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class doesn't add any functionality or special

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behavior to the Robot. It's just a different way

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to organize and write the code. And speaking of

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writing, well, let's actually write that class

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with Python.