pysynphot.observationmode.CompTable:
CompTable class; opens the specified comptable and populates 1-d
arrays of component names and file names in the members compnames
and filenames
pysynphot.observationmode.GraphTable:
GraphTable class; opens the specified graph table and populates 1-d
arrays of keyword names, innodes, outnodes and component names in
the members keywords, innodes, outnodes and compnames