PETSc is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations. It employs the MPI standard for all message-passing communication.

petsc4py are Python bindings for PETSc, the Portable, Extensible Toolkit for Scientific Computation.

A good friend of petsc4py is:

• mpi4py: Python bindings for MPI, the Message Passing Interface.

Other two projects depend on petsc4py:

• slepc4py: Python bindings for SLEPc, the Scalable Library for Eigenvalue Problem Computations.

• tao4py: Python bindings for TAO, the Toolkit for Advanced Optimization.