columns_in_maze len(row_listself rows_in_maze rows_in_maze self columns_in_maze columns_in_maze self x_translate columns_in_maze self y_translate rows_in_maze self turtle(shape 'turtle'setup(width height setworldcoordinates((columns_in_maze (rows_in_maze (columns_in_maze (rows_in_maze def draw_maze(self)for in range(self rows_in_maze)for in range(self columns_in_maze)if self maze_list[ ][ =obstacleself draw_centered_box( self x_translatey self y_translate'tan'self color('black''blue'def draw_centered_box(selfxycolor)tracer( self up(self goto( , self color('black',colorself setheading( self down(self begin_fill(for in range( )self forward( self right( self end_fill(update(tracer( def move_turtle(selfxy)self up(self setheading(self towards( self x_translatey self y_translate)self goto( self x_translatey self y_translatedef drop_bread_crumb(selfcolor)self dot(colordef update_position(selfrowcolval=none)if valself maze_list[row][colval self move_turtle(colrowif val =part_of_path recursion