With the 0.1.3 release of oak you have now Atom feed support.
It still doesn't validate on the w3c validator, but it's usable and well parsed by feed readers.
In next versions we'll try to fix the small bugs in atom.xml.
The last version is already available at PyPi.
Enjoy!
If you liked this post, you can donate using Bitcoin 12jVrWkk5S6x5hEizThZwgTx59KxaDdK4C