how to create a virtual environment in python mac code example

Example 1: virtual environment mac

1. 	# Creates the virtual enviroment.
	virtualenv venv
  
2.  # Activates virtual enviroment.
	source venv/bin/activate

Example 2: 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 3: how to use virtual environment python

source env/bin/activate

Example 4: how to use virtual environment python

python3 -m pip install --user virtualenv

Example 5: create virtualenv python3 mac

$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"