using inspect to avoid indexing problem on py3
using inspect to avoid indexing problem on py3

elkingtonmcb/pybuilder,esc/pybuilder,Designist/pybuilder,Danielweber7624/pybuilder,Designist/pybuilder,alex-dow/pybuilder,TimYi/pybuilder,locolupo/pybuilder,onesfreedom/pybuilder,arcivanov/pybuilder,Danielweber7624/pybuilder,arcivanov/pybuilder,esc/pybuilder,arcivanov/pybuilder,alex-dow/pybuilder,pybuilder/pybuilder,elkingtonmcb/pybuilder,esc/pybuilder,onesfreedom/pybuilder,TimYi/pybuilder,pybuilder/pybuilder,pybuilder/pybuilder,paolodedios/pybuilder,paolodedios/pybuilder,locolupo/pybuilder,paolodedios/pybuilder