#  StringEquality.py  Copyright (c) Kari Laitinen

#  http://www.naturalprogramming.com

#  2006-05-26  File created.
#  2022-12-16  Converted to Python 3.

#  Operator == compares objects.

#  Operator 'is' chan check whether two names reference
#  the same object.


first_string   =  "aaaaaa"
second_string  =  "bbbbbb"

print( "\n  " + first_string + "  " + second_string, end="" )

if  first_string  == second_string  :

   print( "\n     Equal objects.", end="" )

else :

   print( "\n     Not equal objects.", end="" )


if  first_string  is  second_string  :

   print( "\n     Referencing the same object.", end="" )

else :

   print( "\n     Different objects referenced.", end="" )



second_string  =  first_string

print( "\n  " + first_string + "  " + second_string, end="" )

if  first_string  == second_string  :

   print( "\n     Equal objects.", end="" )

else :

   print( "\n     Not equal objects.", end="" )


if  first_string  is  second_string  :

   print( "\n     Referencing the same object.", end="" )

else :

   print( "\n     Different objects referenced.", end="" )


#  The following statement makes an identical copy of the first string

second_string  =  first_string[ 0 : 2 ]  +  first_string[ 2 :  ]

print( "\n  " + first_string + "  " + second_string, end="" )

if  first_string  == second_string  :

   print( "\n     Equal objects.", end="" )

else :

   print( "\n     Not equal objects.", end="" )


if  first_string  is  second_string  :

   print( "\n     Referencing the same object." )

else :

   print( "\n     Different objects referenced." )