Pyclaw is a Python-based solver for hyperbolic PDEs that includes the algorithms of Clawpack and SharpClaw.
It has been designed with easy extensibility, performance, and exploration in mind. PyClaw also includes a scalable parallel implementation of Clawpack using PETSc.

Documentation is available at http://clawpack.org/pyclaw/.

If you use PyClaw in research that leads to publication, please cite PyClaw (see also citing Clawpack).