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As many other programming languages, Python is also a very good object, orientation, language and



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what means object orientation.



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This means that also Python can create a custom class.



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So we already learned the most famous data types or the most famous classes disordered, the integer



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string.



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William and so on, OK, in this class are predefined, but sometimes you want to create a type that



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is a custom one and really simplify so called.



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For example, if you want to create.



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Different types of animals.



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It is way easier to have a pretty defined class which implements all the methods that are applicable



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for exactly animals and all the different colors and breeds and basically different types of animals



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that you can find out there.



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And this is quite useful when used in programming.



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And to be honest, most of the complex and real world codes are object oriented.



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But let's see how this works now in our IDE.



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So you declare a class by keyword class in Python, so separate class then the name of the class.



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In our case, animal is the class who can go out the functions applicable from this class.



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For example, what an animal can do.



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Well, the animal control.



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So I will create a method so def.



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Run in then self, and now let's print what is going to happen, and just so here, we're right running.



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So when we call this metal for an animal, dismiss the animals running, no, let's create another method.



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So T.F. eat and then print eating.



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Right.



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So this a class of animals and, you know, all the animals can run and eat.



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And for that reason, disconcert implemented here.



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But now you're creating an animal that have this features or how you're creating an instance of the



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class.



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It is very simple.



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For example, I want to create a dog, so dog will be equal to animal.



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OK, this is the same way a certain variable can be integer.



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For example, on no, let's say from one to 10, the numbers from 149 in are integers.



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Right.



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And the dog is of a type animal that's already defined.



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So if I write Dog Dot and you can see now when they write the dog dot, they're in the Middle East and



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were unavailable because they're available for this class.



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Right.



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So let's choose the Middle East and just from the cold.



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So if I run it, you can see that the dog is sitting at the moment, right.



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Now, you can also at some future with this dog.



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So if I write a dog Dot.



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And then the British will be Podell, OK, and I what all of adult.



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Age in the age of the dog could be five years right now if I were to print Dog Dot.



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H I will get five for the age of the doc, OK, but do you see something that is not quite right here?



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Well, the problem here is that every time that we create a dog outside of this class, we will need



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to define dog, dog, breed.



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So we are defining a new parameter and then saying that's a poodle or dog to teach in stating that it's



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five years old, isn't that better?



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If we could have this features inside our class and yes, in Python, you can do that.



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And actually the most useful way to do this is by a constructor.



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And what constructor is?



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Well, it just means that basically when you want to create a dog or any other animal, when you want



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to create an animal, you definitely need some parameters that are going to be assigned to this animal.



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For example, D.F. and constructor is marked by init or just the initialization.



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OK, self cómo.



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Breeds.



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Colma color.



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And then the cycle itself not breeds equal to greed and self-doubt.



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Color is equal to color.



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OK, so now every user that wants to create an animal first has to declare what is the breed in the



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color of this animal?



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OK.



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So now the creation of the dog will look like this dog equals animal, so class animal inside the briquettes,



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it's right for them in the car will be white.



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And now if I want to print dot, dot, you're getting great, Cowwarr, I'd run and also dismantlers



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here.



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So if I would like dog breeds and let's actually add it in the print statement.



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So if I run the code now, you can see that we're getting the breed of the dog that was defined once



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we declared our dog.



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Right.