check if python3.7-venv 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: how to create environment in python3.7

# by runnin this command you can directly create python environment in with python3.7 version
python3.7 -m venv <venv_name>