To compile new sass:

sass homepage/static/scss/main.scss homepage/static/css/output.css

To run on your local

DJANGO_KEY=yourkey HOST_EMAIL=myfromemail SENDGRID_API_KEY=apikey python manage.py runserver

To virtualenv

 python3 -m virtualenv venv -p ~/.pyenv/versions/3.6.7/bin/python3
 source venv/bin/activate
 pip install -r requirements.txt