python run with vieruelenv command code example

Example 1: create a virtualenv python

pip install virtualenv
cd projectfolder #go to project folder
virtualenv projectname #create the folder projectname 
source projectname/bin/activate

Example 2: how to use virtual environment python

source env/bin/activate

Example 3: how to use virtual environment python

python3 -m pip install --user virtualenv

Example 4: how to make virtual environment

virtualenv mypython