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Okay.

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So I'm tired of using Python on the box now.

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What I'm going to do is start an Ubuntu VM on my local mac.

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Now I'm using Linux.

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I strongly suggest just like Python that you learn Linux.

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Linux is one of those core skills.

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You're going to use it everywhere, so make sure that you learn Linux.

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So here I'm going to open up a terminal.

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This is on my local computer.

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It's not in.

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This is local.

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And what I'm going to do is install python three and net mico.

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Basically what we're doing is we installing Python three on the Ubuntu PC and we installing net MICO,

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which is a great way to connect to network devices.

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Rather than you writing all the low level code to SSH to a network device and then send commands to

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a network device and then interpret the output.

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Net Mico is your first step in automation because the developer of Net Mika has done a lot of the hard

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work already and you can just leverage that code in your Python scripts.

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One of the advantages of Python is there are a whole bunch of libraries available, including Net MICO,

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including apps, including Narnia that make our lives as network engineers a lot simpler.

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Don't reinvent the wheel, use the code and the hard work that others have done, and import those libraries

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into your code and just leverage them.

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Don't reinvent the wheel.

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Now I've already installed these commands on my Ubuntu PC, but I'll paste them here just to show you

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the process.

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So sudo apt install python three.

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Pip basically allows me to install python three on the ubuntu computer.

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And then I'm going to install net mico.

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Once again, I have previously installed the software, so it should all be good.

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Just in case you want to know what release I'm using, I'm using ubuntu.

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18.

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04.3 ELTs.

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So this command LSB released a shows me the version of a Punto that I'm using, so I'm just using one

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of the later releases of Ubuntu.

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So I'll clear the screen.

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And now let's create a script.

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So here's my script.

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I'm going to copy it into that Ubuntu computer and then I'll show you how to use it.

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I'm going to create a script called Python one point p.

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Not a good name, but it's okay for this demonstration and I'm going to paste that code in.

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This is importing the library net MICO So I'm going to basically leverage the power of net mico to connect

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to my Nexus device.

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Here's the username, here's the password, here's the port.

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Now I know a lot of people are going to complain, so I'll just say it right now.

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You don't have to store the credentials in your script.

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You could prompt for them if you wanted to.

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I'm just going to store it yet to keep it simple.

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It's a lab anyway, so it doesn't matter.

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I just want to show you how simple it is to extract information from a remote router.

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This route is running probably in the States somewhere.

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I don't know.

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It's hosted by Dev Net and I'm going to pull back the show IP interface, brief output and display it

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on my computer.

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So.

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This is an example of a dictionary in Python.

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Notice the formatting.

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Does that look familiar?

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Hopefully that looks familiar, but it's a little bit different here to JSON because in JSON formatting,

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we don't use single inverted commas.

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Basically, this is a dictionary storing the information that we need to connect to the router.

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This command allows me to connect to the router and then this allows me to send a command to the router.

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In this case, show IP interface brief.

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We store that in a variable and then we print the results out.

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So I'll save that script.

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I'm going to use Python three to run that script.

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Okay, I'm getting an error.

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And this is one of the things you need to be careful with using PowerPoint.

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Notice the difference between that and this.

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Don't use PowerPoint.

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Use a text editor.

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I typically use sublime text or Visual Studio code.

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Notice that's gone green now, so that looks better.

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I'll save that script.

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Python three.

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Python one.

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P y script seems to be working now.

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So this is a switching to that device and then running the command and then hopefully we'll display

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the output.

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And there you go.

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We can see the output on that remote nexus device on my ubuntu computer.

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On the succession to the nexus show ip interface brief.

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There's the output of my direct ssh session.

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And here's the output using my python script.

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Okay.

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So once again, I could simply type python three, Python one at P.

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Why?

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Python three means I'm using Python three.

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Python one is the name of my script and I can see the output.

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It's as simple as that to retrieve that data from that Nexus device.

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But let's try and do something more intelligent with the data.