Alternatives for slepc4py (python3) =================================== slepc4py is available for python3 with support for real numbers (python3-slepc4py-real) and complex numbers (python3-slepc4py-complex). python3-slepc4py is a dummy package that depends on python3-slepc4py-real (default) or python3-slepc4py-complex. Only one configuration (real or complex) can be used with slepc4py at a time. An alternatives mechanism is available to select the preferred configuration, # update-alternatives --config slepc4py The default preference is for real number support (python3-slepc4py-real). If you configure alternatives manually then please also configure the alternatives for petsc4py to match. Complex number support has not been provided for python2 since python2 is deprecated and will be dropped in the near future.