More PyQuante Solvers
PyQuante now has a nice collection of solvers in the Solvers.py and DMP.py modules. Solvers.py has methods that solve the eigenproblem in the subspace of previous orbitals, and DMP.py has methods that use density matrix purification to solve for the updated density matrix.

There's a test suite in Solvers.py that shows how all of these methods can be used to solve H2.
PyQuante Updated
PyQuante has been substantially updated of late. We've added a new eigensolver library, as well as a more structured, object-oriented method of running HF and DFT calculations. The code is currently only available in the subversion branch, but we anticipate a version 1.6.0 point release soon.
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