factored out python2/3 differences on raw_input
factored out python2/3 differences on raw_input

whaleygeek/pyenergenie,hairychris/energenie-test,whaleygeek/pyenergenie,hairychris/energenie-test,hairychris/energenie-test,whaleygeek/pyenergenie,hairychris/energenie-test,whaleygeek/pyenergenie