# Program to read in a positive number # and complain when the input isn't that # # Matt Bishop, ECS 10, Fall 2012 # # the program itself # def main(): # # loop to show how to break out of an infinite loop # while True: # read in a positive integer # handle any exceptions (relatively) intelligently try: n = int(input("type a number: ")) # exception: bad value (string, invalid number) except ValueError: print("bad value -- try again!") # give it another chance # exception: end of file except EOFError: print("end of file -- bye!") # quit break # some other exception except: print("Unknown exception -- ignoring!") # ignore the problem # no exception -- print the number else: if n <= 0: print("You typed a non-positive number") else: print("Read", n) print("\n-----------------------\n") main()