install python 3.8 which includes a virtualenv. install pip if you don't have. python3 -m venv flask //Create a venv called flask. source flask/bin/activate //activate venv Install those modules $ flask/bin/pip install flask $ flask/bin/pip install flask-login $ flask/bin/pip install flask-openid $ flask/bin/pip install flask-mail $ flask/bin/pip install flask-sqlalchemy $ flask/bin/pip install flask-migrate $ flask/bin/pip install flask-whooshalchemy $ flask/bin/pip install flask-wtf $ flask/bin/pip install flask-babel $ flask/bin/pip install guess_language $ flask/bin/pip install flipflop $ flask/bin/pip install coverage pip install python-dotenv run "FLASK_APP=admin.py" run "flask run" use localhost:5000