Fixed type error to ensure item was being extracted at proper index instead of calling the list.
Fixed type error to ensure item was being extracted at proper index instead of calling the list.

UWPCE-PythonCert/IntroPython2016,weidnem/IntroPython2016,Baumelbi/IntroPython2016,UWPCE-PythonCert/IntroPython2016,Baumelbi/IntroPython2016,weidnem/IntroPython2016,weidnem/IntroPython2016,UWPCE-PythonCert/IntroPython2016