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In this lecture can show you how to install an external module so that you can use it with your micro

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python protection, SB 32.

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In this case.

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In this example, I'm going to use awesome micro python to look for an interesting module.

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And there's quite a lot here.

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But one that drew my attention is this one here.

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Micro math, micro mathematics and analytics looks interesting.

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So click on the link here that will take you to the repository for this particular project.

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Now, this is a GitHub project and the files are up the top with a description of the project down the

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bottom.

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So there's a wiki as well.

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I can see issues and documentation page.

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Let's have a look at those to see what's happening here.

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Just click there.

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So the wiki doesn't have much just a list of to do items here.

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They could have a documentation.

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I can take you back to the same GitHub main page.

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So not much there either.

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But we do have access to the source code so we can drill inside the source code.

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The math directory contains a bunch of python files.

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You can browse these files to see what this project is all about.

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In many cases with micro python projects, the source code itself is the limitation you can find.

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So we have a look inside.

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Operator, operator, Dopy why has a few simple functions for additional application, power calculations,

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etc..

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Let's compare it to a look at another one, maybe inside calculus.

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So it looks like this is populated with calculus related functions.

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OK, it's a few to do items here as well.

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But for the sake of this example, this is actually good to go.

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So to install it, the first thing to do is to download a zip version of this archive.

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So click on the green button, then click on Download Zib that will bring the zip file onto your computer.

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And in my case I have already downloaded it and expanded it from the zip file so that this is now the

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contents of the repository on my computer.

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Now the thing that you need is the math.

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That victory, very often a module will contain a single file.

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But in some cases, like in this case here, the module comes as a collection of files usually bundled

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inside a directory.

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So the next thing to do is to get this directory over to a folder that I can use in order to upload

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from that folder to my HP through to the server.

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Look at 30.

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So 30 has got the file step here.

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And right now I've browsed into Micro Python E.S.P 32 two, which is sitting on my desktop so I can

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either redirect this over to my downloads folder in order to be able to see the math directory inside

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this list of files and directories.

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Or in this particular case, I'm just going to copy.

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This directory and pasted inside.

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My open directory, I'm just going to come wait and paste it over, so it's a very standard and move

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to the top now.

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So there is my UMass directory right there inside my micro python, especially two, and it's cruel.

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And yet they just appeared now in my list of files and the phony.

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Right there.

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And the next thing to do to be able to use it on my experience is to transfer the whole directorate

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into my especially to flash memory and system.

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So the easiest way to do that is to.

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Right.

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Click on the director or the TransFair and then select upload forward slash.

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Do that.

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Wait for a few seconds.

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And there's math, right?

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So I'm going to do a couple of experiments.

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To try out the contents of this module, just trying to expand the shelf part of the window so you can

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see more what's happening.

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Of course, remember, you always have the source code.

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Let's say that you want to play around with the functions inside operator Torpy.

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So just double click on Operator to provide to see what's inside.

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And you see the three or four functions that are available here.

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And the first thing that you want to do is to import the module into your show so that you can use it.

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So the easiest way to do that is to say that you want to use the new math module, but specifically

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you want to import operator.

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So if you just say import your math, then you'll be importing all of the files that are part of the

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you must directory, but if you only want to use the functions inside the operator file, then you can

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say from your mouth the name of the directory import operator, the name of the file without the extension.

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So enter and now we can use the ADD function in this way, so two, three has those two numbers across

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and the addition is five.

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What about Peter W. Power?

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Two in the power of three is eight and so on.

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You can subtract.

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And it works now in the exact same way as what you've just seen me doing on the show, they can use

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the exact same method to import a library file or a module file to your ISP.

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Three to one more thing that I want to show you before we close with this lecture, and this section

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is to show you what you can do if you only really need one of those files, you don't need all of them.

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They may not be taking RAM if you have an import them, but they are taking up precious flash memory

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space.

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So maybe you don't want all of them.

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But let's say that you only want the operator functions.

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So let's clean up here and remove the directory from my device.

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I can then go to operate on just the single file that I want to store on my micro python device and

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upload it.

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And that appears here on the same level as the rest of my files, it's not inside a directory this time

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around, just going to do actually a soft actually up to a reset in order to reboot essentially my ISP

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three, two and clear memory.

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All right.

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So starting from fresh new, I want to import operator, so just say the import operator.

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And now I can use the functions that come with operator and the look inside the file again, just like

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before you could say operator, add two and three together and that will give us five.

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So there's a couple of of ways by which you can do that, but virtually with every single case you'll

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be able to use this methodology to import a module to your ability to be able to use on the show or

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through Python filed.