An implementation of Snake in python I made because I was bored

snek.py

import pygame
import random

# Colors
BLACK = (0, 0, 0)
GREEN = (0, 255, 0)
WHITE = (255, 255, 255)

# Width and height of each segment of the snake
BLOCK_SIZE = 20

pygame.init()

win_height = 600
win_width = 600

window = pygame.display.set_mode([win_height, win_width])
pygame.display.set_caption("Snek")

x = 200
y = 200
x1 = 0
y1 = 0

snake_len = 0

block_list = []
head = [x, y, BLOCK_SIZE, BLOCK_SIZE]
block_list.append(head)

def food_pos():
    food_x = round(random.randrange(0, win_width - BLOCK_SIZE) /
                BLOCK_SIZE) * BLOCK_SIZE
    food_y = round(random.randrange(0, win_height - BLOCK_SIZE) /
                BLOCK_SIZE) * BLOCK_SIZE
    return food_x, food_y

food_x, food_y = food_pos()
close = False
clock = pygame.time.Clock()

while not close:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            close = True
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                x1 = -BLOCK_SIZE
                y1 = 0
            elif event.key == pygame.K_RIGHT:
                x1 = BLOCK_SIZE
                y1 = 0
            elif event.key == pygame.K_UP:
                y1 = -BLOCK_SIZE
                x1 = 0
            elif event.key == pygame.K_DOWN:
                y1 = BLOCK_SIZE
                x1 = 0

    x += x1
    y += y1

    if snake_len < len(block_list):
        block_list.pop()

    head = [x, y, BLOCK_SIZE, BLOCK_SIZE]
    block_list.insert(0, head)

    window.fill(BLACK)
    pygame.draw.rect(window, GREEN, [food_x, food_y, BLOCK_SIZE, BLOCK_SIZE])

    if x > win_width or y > win_height or x < 0 or y < 0:
        close = True 

    for block in block_list:
        pygame.draw.rect(window, WHITE, block)

    pygame.display.update()

    for block in block_list[1:]:
        if block == head:
            close = True

    if food_x == x and food_y == y:
        food_x, food_y = food_pos()
        snake_len += 1

    clock.tick(10)

pygame.quit()
quit()