import pygame
import time
import random

pygame.init()

white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)

dis_width = 1000
dis_height = 800

dis = pygame.display.set_mode((dis_width, dis_height))
pygame.display.set_caption('Snake')

clock = pygame.time.Clock()

snake_block = 10
snake_speed = 30
life = 3

font_style = pygame.font.SysFont('bahnschrift', 25)
score_font = pygame.font.SysFont('comicsansms', 35)


def Your_score(score):
    value = score_font.render("Your Score: " + str(score), True, yellow)
    dis.blit(value, [0, 0])

def life_snake(life):
    life_text = score_font.render("Lives: " + str(life), True, yellow)
    dis.blit(life_text, [850, 0])

def our_snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])


def message(msg, color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width / 6, dis_height / 3])


def gameLoop():
    global life
    game_over = False
    game_close = False

    x1 = dis_width / 2
    y1 = dis_height / 2

    x1_change = 0
    y1_change = 0

    snake_List = []
    Length_of_snake = 1

    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0

    while not game_over:
        while game_close:
            dis.fill(blue)
            life -= 1
            life_snake(life)
            our_snake(snake_block, snake_List)
            x1 = dis_width / 2
            y1 = dis_height / 2
            if life == 0:
                message('You Lost!', red)
                Your_score(Length_of_snake - 1)
                pygame.display.update()
                time.sleep(2)
                game_over = True
                game_close = False
            else:
                pygame.draw.rect(dis, red, [x1, y1, snake_block, snake_block])
                pygame.display.update()
                time.sleep(1)
                game_close = False


        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT or event.key == pygame.K_a:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT or event.key == pygame.K_d:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP or event.key == pygame.K_w:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN or event.key == pygame.K_s:
                    y1_change = snake_block
                    x1_change = 0

        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
            game_close = True

        x1 += x1_change
        y1 += y1_change
        dis.fill(blue)
        pygame.draw.rect(dis, green, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List[0]

        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close = True

        our_snake(snake_block, snake_List)
        Your_score(Length_of_snake - 1)
        life_snake(life)
        pygame.display.update()

        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1

        clock.tick(snake_speed)

    pygame.quit()
    quit()

gameLoop() добавь на экран прямоугольник серого цвета, ширина прямоугольника 10, длина 100, координаты отрисовки: 700 по x, 300 по y. При столкновении головы змейки с прямоугольником, у змейки будет отниматься одна жизнь