Durus

Durus: "This is Durus, a persistent object system for applications written in the Python programming language. Durus offers an easy way to use and maintain a consistent collection of object instances used by one or more processes. Access and change of a persistent instances is managed through a cached Connection instance which includes commit() and abort() methods so that changes are transactional. Durus is best suited to collections of less than a million instances with relatively stable state."