color 'greenelif val =obstaclecolor 'redelif val =triedcolor 'blackelif val =dead_endcolor 'redelsecolor none if colorself drop_bread_crumb(colordef is_exit(selfrowcol)return (row = or row =self rows_in_maze or col = or col =self columns_in_maze def __getitem__(selfidx)return self maze_list[idxthe complete program is shown below this program uses the data file maze txt shown below which stores the following maze++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++note that it is much more simple example file in that the exit is very close to the starting position of the turtle completed maze program takes maze txt as input import turtle part_of_path 'otried obstacle '+dead_end '- exploring maze