How to activate a virtualenv code example

Example 1: virtual env create python

#------FOR LINUX/MAC---------#
#installing venv 
sudo apt-get install python3.6-venv
#creating virtual env
python3 -m venv env
#activating virtual env
source env/bin/activate


#-------FOR WINDOWS----------#
#installing venv
py -m pip install --user virtualenv
#creating virtual env
py -m venv env
#activating virtual env
.\env\Scripts\activate

Example 2: install virtualenv

pip install virtualenv

activate it by doing this:
cd myproject/Scripts/activate

Example 3: create virtual environment python

sudo pip3 install virtualenv 

virtualenv venv

Example 4: activate environment in virtualenvwrapper

workon [<name>]