#!/usr/bin/python3
def main():
	x=None
	y=None
	try:
		x=input("Dose x:")
		y=input("Dose y:")
		z=eval(x)+eval(y)
		print(f'x+y={z}')
		
	except Exception as e:
		print ("Exception 1:",str(e))
	# exit(1)
	finally:
		print ("go on") 	
	
if __name__=="__main__":