import curses

from random import randint

WINDOW_WIDTH = 60

WINDOW_HEIGHT = 20

Number of blocks in window per line = WINDOW_WIDTH -2.

Block x index ranges from 1 to WINDOW_WIDTH -2.

Number of blocks in window per column = WINDOW_HEIGHT -2.

Block y index ranges from 1 to WINDOW_HEIGHT -2.

curses.initscr()

win = curses.newwin(WINDOW_HEIGHT, WINDOW_WIDTH, 0, 0)

win.keypad(1)

curses.noecho()

curses.curs_set(0)

win.border(0)

win.nodelay(1)

snake = [(4, 4), (4, 3), (4, 2)]

food = (6, 6)

win.addch(food[0], food[1], '#')

score = 0

ESC = 27

key = curses.KEY_RIGHT

while key != ESC:

win.addstr(0, 2, 'Score ' + str(score) + ' ')

win.timeout(150 - (len(snake)) // 5 + len(snake)//10 % 120)

prev_key = key

event = win.getch()

key = event if event != -1 else prev_key

if key not in [curses.KEY_LEFT, curses.KEY_RIGHT, curses.KEY_UP, curses.KEY_DOWN, ESC]:

key = prev_key

y = snake[0][0]

x = snake[0][1]

if key == curses.KEY_DOWN:

y += 1

if key == curses.KEY_UP:

y -= 1

if key == curses.KEY_LEFT:

x -= 1

if key == curses.KEY_RIGHT:

x += 1

snake.insert(0, (y, x))

if y == 0: break

if y == WINDOW_HEIGHT-1: break

if x == 0: break

if x == WINDOW_WIDTH -1: break

if snake[0] in snake[1:]: break

if snake[0] == food:

score += 1

food = ()

while food == ():

food = (randint(1,WINDOW_HEIGHT-2), randint(1,WINDOW_WIDTH -2))

if food in snake:

food = ()

win.addch(food[0], food[1], '#')

else:

last = snake.pop()

win.addch(last[0], last[1], ' ')

win.addch(snake[0][0], snake[0][1], '*')

curses,endwin()

print(f"Final score = {score}")