text: class ShortInputException(Exception):
      '''A user-defined exception class.'''
      def __init__(self, length, atleast):
          Exception.__init__(self)
          self.length = length
          self.atleast = atleast
  
  try:
      text = input('Enter something --> ')
      if len(text) < 3:
          raise ShortInputException(len(text), 3)
      # Other work can continue as usual here
  except EOFError:
      print('Why did you do an EOF on me?')
  except ShortInputException as ex:
      print(('ShortInputException: The input was ' +
             '{0} long, expected at least {1}')
            .format(ex.length, ex.atleast))
  else:
      print('No exception was raised.')
  