how to set up virtualenv code example

Example 1: how to create a new virtualenv

to make a new virtualenv: 
virtualenv env_name

             to activate this virtual environment:
source env_name/bin/activate (on mac and linux)
source env_name/Scripts/activate (on windows)

Example 2: setting p a virtual envioronment

#Creating a Virtual Environment | Windows 10
#Proceed to the folder were you want to create your environment, Then enter the following:
...\> py -m venv project_name
#To activate the environment, run:
...\> project_name\Scripts\activate.bat
#Then install Django using pip
...\> py -m pip install Django

Example 3: how to use virtual environment python

source env/bin/activate