The Virtualenv Environnement

1 - The virtualenv module

Python has a module named virtualenv to create a virtual python environment, that is, an isolated working copy of Python that allows you to work on a specific project without affecting other projects. So basically it's a tool that allows multiple side-by-side installations of Python, i.e. a clean install for each project.

2 - Creation of a virtual environment under Linux

If

is not installed in your system, please install it through the terminal shell by typing the command:

$ sudo apt-get install python-pip

Then install the

module by typing:

$ pip install virtualenv

Now check your installation

$ virtualenv --version

Then create a virtual environment:

$ virtualenv my_venv

After this command, a folder named my_venv will be created. If you want to create a

for a specific version of python, type:

$ virtualenv -p / usr / bin / python3 my_venv

or

$ virtualenv -p / usr / bin / python2.7 my_venv

Now we have to finally activate it using the command

$ source my_venv / bin / activate

You are now in a Python virtual environment You can turn it off using

$ deactivate

3 - Creation of Python virtualenv on Windows

To create a

in Windows, just follow the following steps: Run the cmd command and navigate to your project directory using the cd command Install virtualenv by typing in the command:

pip install virtualenv

Now in whatever directory you are, this line below will create a virtualenv:

virtualenv my_venv

Now, if you are in the same directory, activate your virtual environment by typing:

my_venvScriptsactivate.bat

You can deactivate your virtualenv by typing the cmd command:

deactivate