# File: badger4.py
#
# Keep asking the user to type in a number
# until the user types in a valid number.
#
# This version doesn't quit even if the
# user types in ctrl-C.
#

done = False

while not done:
   try:
      # get input string and convert to integer
      #
      userInput = input("Enter a number: ")
      n = int(userInput)

   except ValueError:
      # exception triggered for input not a valid
      # integer
      #
      print("That's not an integer! Try again.")

   except EOFError:
      # exception triggered if user types ctrl-D
      #
      print("Please type something! Try again.")

   except BaseException:
      # unknown error... keep going, anyway
      # try typing ctrl-Z (on Unix)
      #
      print("Unknown error encountered!") 

   else:
      # no exceptions found. Can quit now.
      #
      print("Thank you!")
      done = True

print("n is ", n)