better error messages
better error messages

kris-singh/pgmpy,ankurankan/pgmpy,kris-singh/pgmpy,khalibartan/pgmpy,abinashpanda/pgmpy,jhonatanoliveira/pgmpy,jhonatanoliveira/pgmpy,abinashpanda/pgmpy,sandeepkrjha/pgmpy,pgmpy/pgmpy,sandeepkrjha/pgmpy,ankurankan/pgmpy,pgmpy/pgmpy,khalibartan/pgmpy