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‫Welcome back.

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‫In this video, I would like to show you how to install Python and the necessary libraries in order

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‫for you to be able to run the simulations in Python.

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‫If you have Ubuntu 20.04 like I have it here, then python 3.8 should come by default along with numpy.

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‫You can check the version in terminal like this.

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‫Python three and then two dashes and then version.

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‫So you see I have python 3.8.5 and you can check the version of numpy like this Python three dash.

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‫See then you put here a quotation mark, import numpy semicolon print and then you're going to put here

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‫num py dot then you have two underlines here and then you're going to put version, then another two

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‫underlines and then another quotation mark here.

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‫So here I have known py 1.7.4.

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‫That's what I received by default.

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‫These two things I received by default when I installed my Ubuntu 20.04.

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‫If you don't have python 3.8, then you can install it with these commands.

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‫Sudo apt update.

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‫Then you put your password here.

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‫So it will give you some upgrades and then you will write sudo which is superuser then apt install software.

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‫Dash properties dash common.

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‫Then I'm going to write sudo add dash.

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‫APT repository ppa colon dead snakes.

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‫Then slash and ppa.

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‫So I'm going to press enter and then I'm going to write sudo apt and then update then sudo apt install

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‫python 3.8 and then to check the version you write Python three, dash dash version.

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‫And then if you don't have numpy, you can add it like this sudo apt update then sudo apt install python

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‫three dash.

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‫Pip pip is a python package installer, so you check the version of your pip.

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‫So pip for python three would be pip three, then dash dash and then version.

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‫So here it is.

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‫And now you write pip three install py.

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‫And now you write pip three install mad plot lib to equal signs.

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‫And now you can run the code.

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‫But this is very important.

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‫You have to run it in Linux terminal or Windows Command prompt.

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‫Do not use ides like Spider or Jupyter Notebook.

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‫The animation does not want to work well in there.

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‫The most robust way is to run it from terminal or from Windows Command prompt.

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‫So I have a file here.

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‫Calculus sym pid train dot pi and I want to run it.

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‫So in my terminal I will go to my desktop.

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‫So change directory or CD desktop enter.

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‫I can see all my stuff here with an LZ command.

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‫And so in order to run this file, I'm going to write Python three and then calculus sym pid train py

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‫and there you go.

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‫It works.

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‫So that has been in Linux.