Change exception.py during class Q&A
Change exception.py during class Q&A

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