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Language: en

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In this section of the course we're
going to be creating our django

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application before we can create our
django app we need to create a Python

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virtual environment so we can install
all of the dependencies such as Python

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and the Django rest framework I'm going
to show you how to create a Python

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virtual environment on our vagrant
server

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load up the terminal and change

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to our project workspace courses and
then our profiles REST API project

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connect to the server by typing vagrant
SSH and then change directory to the

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forward slash vagrant directory

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you
create a Python virtual environment

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using Python 3 with the Python venv
command so if we do Python - m venv

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and then you set the path where you want
to create the virtual environment so the

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virtual environment is a set of files
which you work on and this is the

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directory where it installs all of the
dependencies when you install them with

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the Python package manager

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So we're going to create it in tilde (~) forward slash env

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what this does is it creates a new file
in our vagrant server home directory

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called env and creates our Python
environment there now the reason I do it

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here is because I don't want this
environment to synchronize with our

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local machine so if you ever need to
destroy and recreate the vagrant server

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from scratch you can do that with a
fresh Python virtual environment

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This is why I specify this tilde because it will
create the environment in the home

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directory of our vagrant server as
opposed to the vagrant folder which is

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synchronized to our local machine

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Ok so
once you've typed that hit enter and this

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will go ahead and create 
a new virtual environment for our

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project

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the way that virtual
environments work is you need to

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activate them and deactivate them so
when you're activated on a virtual

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environment all of the dependencies that
you run in the Python application will

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be pulled from the virtual environment
instead of the base operating system the

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way you activate a virtual environment
is you type source and then the path to

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the activate script within our
environment so in our case this path

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would be in the home directory or tilde
/env/bin forward slash activate then

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hit enter you know that you're working
on a virtual environment because the

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name of the virtual environment you're
working on appears in brackets at the

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prefix of the command line input

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the way
that you switch off a virtual

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environment is you just type deactivate
and then you can see that the name of

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the virtual environment disappears from
the prefix and you are now deactivated

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from that virtual environment

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I'm going
to provide a cheat sheet in the

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resources of this video which provides
all of these commands because I know

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that it can be a lot to remember when
you're doing this for the first time

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that's how you activate and deactivate a
virtual environment with Python