#NEWLINE# def copy( self ) : #NEWLINE# #INDENT# storage = self . __class__ ( width = self . width , height = self . height ) #NEWLINE# storage . tiles = [ ] #NEWLINE# for y in range ( self . height ) : #NEWLINE# #INDENT# storage . tiles . append ( list ( self . tiles [ y ] ) ) #NEWLINE# #UNINDENT# return storage