Just finished putting together a Python interface to the Lemur Toolkit called pymur. There were a lot of forum postings by people looking to use Lemur from Python, but up until now no one wanted it badly enough to make an interface. The Lemur Toolkit is maintained by some folk at CMU, but even so it has a number of issues that make it a real PITA to link against with a new library. They have made every effort to make it as difficult as possible for anyone to write software that uses their library. For shame. Nonetheless, pymur should (for now) work fine on most linux distributions.