#  StatesList.py (c) Kari Laitinen

#  http://www.naturalprogramming.com

#  2006-05-24  File created.
#  2022-12-16  Converted to Python 3.

#  This program works like States.py but in this version texts
#  are handled mostly as lists of characters.

#  Note that the + operator can concatenate both lists and strings.

westmost_state  =  list( "Hawaii" )
prairie_state   =  list( "Illinois" )

states_in_usa  =  westmost_state  +  [ ' ', ' ' ]  +  prairie_state 

print( "\n   "  +  "".join( states_in_usa ), end="" ) 

golden_state    =  list( "California" )

states_in_usa  =  states_in_usa[   : 6 ]  + [ ' ', ' ' ]  +  golden_state  + \
                  states_in_usa[ 6 :   ]
                  
print( "\n   "  +  "".join( states_in_usa ), end="" )

eastmost_state  =  list( "Maine" )

#  The parameter (argument) for the extend() method must be a list.
states_in_usa.extend( list( "  Virginia  " ) )
states_in_usa.extend( eastmost_state )

print( "\n   "  +  "".join( states_in_usa ), end="" ) 

index_of_last_state  =  "".join( states_in_usa ).rfind( "  " ) 

#  We'll delete characters from index_of_last_state to the end of the list
del states_in_usa[ index_of_last_state :  ]

states_in_usa.extend( list( "  Massachusetts" ) )

print( "\n   "  +  "".join( states_in_usa ), end="" ) 

#  To do the last operation, we'll convert the list of characters to a string.

states_in_usa  =  "".join( states_in_usa ).replace( "Illinois", "Michigan" ) 

print( "\n   "  +  states_in_usa )