Python 3 bindings for 64-bit SLEPc 3.19 libraries (complex numbers)

 SLEPc is the Scalable Library for Eigenvalue Problem Computations.
 .
 It is based on PETSc and employs the MPI standard for all
 message-passing communication.
 .
 This package provides Python 3 bindings to almost all functions of
 SLEPc 3.19 with complex number support and 64-bit indexing.
 .
 Access by setting environment variable SLEPC_DIR if the system default
 version of SLEPc is not already set to the 64-bit complex build.