Django is an awesome Python web framework.
"The Twelve-Factor App" is an awesome methodology for building SaaS apps.
django-12factor makes Django more 12factor-y. Right now, this
focuses on the Config - "Store config
in the environment"; Heroku users with
addons will be particularly familiar with this.
Still not sure of the benefits? Check out "Twelve-Factor Config: Misunderstandings and Advice".