Easiest way to write a Python program with access to Django database functionality
I'd like to have a Python program
  which is run using a cronjob instead
  of manually visiting the correct URL
  to update the information.

A simplistic alternative: write a cronjob to automatically "visit the correct URL to update the information" -- could be as simple as a curl or wget, after all.  This doesn't answer the question in the title, but given the way you explain your real underlying problem it just might be the simplest and most immediate approach to solve it.
I have a website which fetches information from RSS feeds periodically (well, currently manually, and this is my problem).  This is currently implemented as a normal Django view, which isn't very nice in my opinion.  I'd like to have a Python program which is run using a cronjob instead of manually visiting the correct URL to update the information.
What is the easiest way to make a Python program have access to my particular Django application and the Django ORM?