def finish_step():
tk.quit()
snake.move()
while True:
tk.after(speed, finish_step)
if egg and snake.is_eat(egg):
snake.is_growing = True
board.delete(egg)
egg = None
else:
snake.delete_bitten_tail()
if not egg:
free_fields = board.find_free_fields(snake)
if free_fields:
egg = board.create_image(choice(free_fields),
board.images['egg'])
tk.bind('<Up>', lambda _: snake.change_direction(Direction.UP))
tk.bind('<Down>', lambda _: snake.change_direction(Direction.DOWN))
tk.bind('<Left>', lambda _: snake.change_direction(Direction.LEFT))
tk.bind('<Right>', lambda _: snake.change_direction(Direction.RIGHT))
tk.mainloop()
except TclError:
pass
