We chose to implement a single feed format, and we chose RSS 2.0 because it is very simple.
But remember how simple itools.rss is! RSS 1.0 is a bit more complex, and uses an RDF namespace.
Let’s take a look at the Atom format. It is very similar to RSS 2.0 in simplicity and usage. Implementing Atom is roughly copying the rss.py package and replace the RSS 2.0 element names to Atom names. More or less.