Django_ratings_sample is a project mainly written in Python, it's free.
sample implementation of djangoratings + jQuery raty
I built this as an example of using django-ratings combined with the jQuery raty plugin to do quick & easy ratings of models.
https://github.com/dcramer/django-ratings
Django 1.3
First, install django-ratings using pip or easy_install. Next, run python manage.py syncdb in the application's directory to create the tables.
python manage.py runserver