fixed problem with solver_diagnostics.py
fixed problem with solver_diagnostics.py

kidaa/pyamg,kidaa/pyamg,kidaa/pyamg,kidaa/pyamg,pyamg/pyamg,huahbo/pyamg,pyamg/pyamg,huahbo/pyamg,huahbo/pyamg,pyamg/pyamg,huahbo/pyamg