As WordPress 3.4 approaches RC and final release, the new features in the XML-RPC API have finally stabilized. For those Python users out there, I’ve updated my Python binding library to take advantage of the new functionality.
If you are currently using a previous release (1.x) of the library, be warned that 2.0 is not backwards compatible. I’ve removed all but one use of legacy Blogger/metaWeblog methods, which has caused the posts module and several others to change significantly. See the changelog for full details.