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Hello and welcome to this video.

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In this video I'm going to introduce you to what packages are in Python.

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So what are packages in Python.

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Packages are basically folders or directories that contains modules.

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They also contain a special python file which is code in it.

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Dot P Y.

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So it has a double on the score on either side.

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The.

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In it the P Way of file can be empty the file basically is used to tell Python that the directory or

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the folder contains a python package which can be imported just like a module.

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The packages are a convenient way to organize your modules and they can also be nested in each other

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so you can have a package inside a package creating a package is fairly straightforward.

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If you're going to do it manually you create a directory inside that directory.

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You create a python file and name it on the score on the score in it.

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On the score on the score dot P Y when creating a package using the PI charm IDC it automatically adds

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the neat file for you.

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So let's create a package somewhere right click on my directory here go new and go Python package and

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I'm just going to give the package a name.

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I just call it healthy.

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That's the name of my package.

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Our click.

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Okay so I've now created a package called Healthy.

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I can see the pie charm as automatically added this in it though.

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P Why file so you can also nest on the packages.

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So if I wanted to create another package inside this package are just right click and go new and then

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the python package and that will automatically add another in it the P Y file.

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So once you have created the package you can add any number of Python files into that package.

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So what I want to do I want to create a module inside this package called Healthy someone a right click

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and go new go python file and I'm just going to create a module I'll call it foo after below.

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So that is the name of my module.

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Now inside the module I can add a simple function so I just say the F and I'll call the function say

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fruits and inside the parentheses I can just passing a parameter which would be a name that you supply

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for the fruits so tab down and I'll just add a print statement inside that print statement.

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I can just see reference the name the name parameter under a comma and then I would just add a tax to

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say name and then you say whatever name you pass in as a fruit.

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It will say if for example you pass in the name of Apple which you say apples are good for you.

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So this is basically a module that I've created inside my package.

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So if you look at this foo here which is a module is nested inside this package called healthy once

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you have created a package you can access the module within that package the same way you would access

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a normal module by using the import or the from keyword.

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So before you can use a module you have to import it.

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Now my module that I'm trying to use is inside a package so I'll need to type in import followed by

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the name of the packet which is called Healthy and then add a dot followed by the name of the module.

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So I have now imported the module I want to use by first adding the name of the package and then I use

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it dot followed by the name of the module.

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So now I can then access the content of the module.

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So the way I can do that I can just say help me which is the name of the package.

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Dot foo foo is the name of the module and then dot again which is a name of a function inside that module.

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And I can now pass in a value which is an argument for the name parameter inside this function called

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fruits which is inside this module here.

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So this is what I'm giving the value for inside here.

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I've given it a value of apples so I'm just going to save my file.

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Now if I play this I should get a response.

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It says apples are good for you.

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So if we go back into the module I created this is the module for the package and this is what it's

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printed out the name which is what I have supplied.

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I've supplied apples and then it appends that text to it which is this.

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So this is one way of accessing your module.

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Another way to access a module is by using the from key word.

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So what I'm going to do I'm just going to comment out.

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Line one here.

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So then that code does not run and here on line three I'm going to add the from key words I'm going

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to say from the package code healthy I want to import the module Code Foo.

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All right.

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So that import set and then on line 5 I can modify this code here.

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All I need now I don't need the Healthy bit here.

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I can just remove that and just reference the module directory so I'm accessing the function called

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fruit which is inside this module called foo.

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So now if I save that and run it I should get the same output so I click on play.

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I can see gives me the same pain.

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Apples are good for you.

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So the two main ways you can access a module you use the import or you can use the from keyword.

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OK so that's it for this video.

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Thank you for watching and bye for now.