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Hello guys.

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Welcome back to another class of our course about Python.

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The complete introduction.

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So until now we talked about all what other strings we talk about numbers.

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And that today we are going to talk about another aspect of programming that is very important.

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So and normally when you go let's say on the Web site or anywhere.

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What's happening is that you interact with the Web site.

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So let's say you are looking at products and then you are interested by certain products.

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You click on the product and you go to pay the product.

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So the Web site will ask you questions so let's say for example the Web site asks you for your name

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your address your method of payment and everything.

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You enter all those the Web site will send automatically a receipt to you and will send you a thank

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you message and we'll send to the person who owns the Web site a message that someone bought their product.

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So how all this works behind the scene.

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Well there is a way to reproduce all this on Python and the most basic way to do it will be by using

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the input function so the input function will simply allow another user to interact with our let's say

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app.

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So this way you ask that so you you will be able to ask basically in the most basic basic way you'll

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be able to ask questions to your user.

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So let's look what all this looks like.

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So how do you write an input function.

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It's very simple.

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So it's gonna be written like this.

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So it's just input and you write down the text that well you write down what you want to ask from the

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person let's say for example we want to ask from the person what is their age.

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So what is your age.

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So it looks something like this.

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And if you want to print it you simply write down print

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and you print your function.

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All right.

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So as you can see here we ask the person their age.

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The program is still running.

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So right now we'll answer let's say the age of the person is 20 years old and you click on enter that's

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it.

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So the program is done to process finished.

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The answer is 20.

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So in this case with it's something that is very very simple we print it up directly the input but let's

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say we want to make it a bit.

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Well not more complicated a bit more cool and instead of just printing what is your age.

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Just printing this and then printing the answer.

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We want to print and we want to put our input into a variable.

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So let's say in this case with we will put it in the variable age

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so we'll say age equal

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and in this case will be input.

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What is your age.

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All right so right now we have this.

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So in this case it's age.

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So our variable age is equal to the input.

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What is your age.

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All right.

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So what exactly do we want to print.

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So right now we have let's say we want to print our age.

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So our variable age and we run the up.

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So the exact same thing will appear here.

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Let's say Write down 20.

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And that's at the up ends like this.

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Let's say I want to make something let's say I want to make it a bit more cooler so we can write down

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my age is

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plus our variable age and we can just run the up.

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What is your age.

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Write down 20 as you can see my age is 20.

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This is just you.

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And as you can see my age is 20.

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So basically we just asked a question to the person that is let's say in front of us right now let's

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say you want to do it a bit more cool.

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So just practice it.

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Let's create let's say I don't know ask a person what this person wants to eat.

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So in this case will well eat drink and let's say ask that person their name where they want to eat

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and their age.

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All right.

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So first of all we need to define our variables.

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So the first variable will be name.

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So ask the person their name.

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So input and the person will write down what is your name

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the age of the person.

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So the second variable that we are going to look at will be the age of the person.

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So once again input and then write down what is your age.

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Third input.

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So what.

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So in this case food

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in this case will ask the person once again what an input.

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So what do you want to eat and finally our last question will be what do you want to drink.

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So what do you

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let's just call it a drink drink.

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What do you want

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to drink.

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Right so you get the point on C and it's very simple

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good.

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So right now what exactly we want our app to print us because right now we have our variables which

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are right here.

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Name each food drink you want.

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We want to print a let's say not a statement but a basic sentence which will say Hello my name is

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just below so here we will have a string.

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So hello my name

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is and the first thing I want to do is a plus and I want to add the variable name and we continue our

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sentence

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by yam this time we'll add the variable H.

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We'll continue our sentence

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I want to eat here we'll continue our sentence so we add food our third variable

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and I want to drink

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and we add our last variable which will be drink good.

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So right now we have our basic set up which will simply print what the person wants to eat and to drink.

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Well what's the name of the person the age of the person what the person wants to eat and to drink.

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So very important simply add those.

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Well if you want to look good not forget to add space.

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Because if not you'll see everything will be too close.

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Great.

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So after that simply click on plain.

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So first question What is your name.

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So in this case let's say my name is.

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I don't know Max what is your age.

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I'm 35.

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What do you want to eat pizza.

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And finally what do you want to drink.

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Caller Hello my name is Max.

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I am thirty five.

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I want to eat pizza.

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I want to drink cola.

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So as you can see here we created a small app that will generate the name of the person the age of the

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person what the person wants to eat and what the person wants to drink.

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All this with the simply the function.

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All this simple with the input function.

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So once again as I explained before this allow us to talk with the well this allow us to talk with the

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person who is behind the apps or the person the user the person who will use the app.

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So once again what I just saw you slow up is the basic of the basic in Python and what you can do with

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the input function you'll see the more we're going to advance in this course the more you will do cool

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stuff.

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And as I said this is just the basic of the basic you'll see with the input function you can do a lot

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of very interesting things.

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And when you put everything one way to put everything that you guys will learn you'll see you'll be

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able to do a lot of very very cool stuff.

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That's it for this class guys.

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And I hope.

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Well right now I suggest you to practice what you just saw and see all in our next class.