suggested_requirements.txt

# If you want to run Selenium tests headless, pyvirtualdisplay makes it lots 
# easier.
pyvirtualdisplay

# Kelvinator uses numpy and PIL for key frame analysis
numpy
PIL

# Certificates infrastructure uses xhtml2pdf to create templated PDFs
# WARNING: also installs reportlab, and takes a while
xhtml2pdf

# Exam regrading uses dateutil for date parsing
# Probably already installed by celery, but recorded here for completeness
dateutil