Can't setup python env



I am new to c9. I imported Python 3 Flask app from git hub and I am trying to get it to run on C9. When I try to set up env, I get the following.

Please advise or point me on how to get a Python 3 env up and running

Thank you

markmnei:~/workspace (master) ls error.log requirements.txt static/ templates/ markmnei:~/workspace (master) virtualenv -p python3 venv
bash: virtualenv: command not found
markmnei:~/workspace (master) $


Resolved … sudo pip install virtualenv