#  ExceptionalNumbers.py  Copyright (c) Kari Laitinen

#  http://www.naturalprogramming.com

#  2006-05-20  File created.
#  2022-12-18  Converted to Python 3.

#  This program demonstrates how exception classes can be
#  defined, how exceptions can be raised ('thrown'), and how
#  exceptions can be caught.

#  Keyword pass can be used to indicate that a class definition
#  is 'empty', i.e., that the class is like its superclass.

class NumberTooSmallException ( Exception ) : pass



class NumberTooLargeException ( Exception ) : pass


def get_number_from_keyboard() :

   number_from_keyboard  =  int( input() )

   if  number_from_keyboard  <=  99  :

      raise NumberTooSmallException()

   elif  number_from_keyboard  >=  999 :

      raise NumberTooLargeException()

   return number_from_keyboard


def get_number() :

   number_from_above_function  =  1234

   try :

      number_from_above_function  =  get_number_from_keyboard()

   except NumberTooSmallException :

      print( "\n NumberTooSmallException caught.", end="" )


   return  number_from_above_function


#  The main program begins.


print( "\n Please, type in a number: ", end="" )

try :

   number_read_via_several_functions  =  get_number()

   print( "\n The number from keyboard is : %d"  %   \
                      number_read_via_several_functions )

except NumberTooLargeException :

   print( "\n NumberTooLargeException caught.", end="" )

except Exception as caught_exception :

   print( "\n Some Exception was caught. Some info:" )
   print( " %s" %  caught_exception )