I am trying to create a webapp using django framework
If you are on python3 , use python3 -m venv <env-name> , env-name being your preferred name for your virtual env. 
Also you get that error because virtualenv is not installed on your system. You can install with pip install virtualenv
I have installed django and then tried using the command line to make a virtual environment then oops it gives me this error
"'"virtualenv"' is not recognized as an internal or external command,
operable program or batch file."
what should I do to correct this