Snake game

import pygame

pygame.init()

white = (255,255,255)
black = (0,0,0)
red = (255,0,0)



gameDisplay = pygame.display.set_mode((800,600))
pygame.display.set_caption('Slither')


gameExit = False

lead_x = 300
lead_y = 300
lead_x_change = 0
lead_y_change = 0

clock = pygame.time.Clock()##clock

while not gameExit:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            gameExit = True
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                lead_x_change = -10
            if event.key == pygame.K_RIGHT:
                lead_x_change = 10
            if event.key == pygame.K_UP:
                lead_y_change = -10
            if event.key == pygame.K_DOWN:
                lead_y_change = 10
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                lead_x_change = 0
            if event.key == pygame.K_UP or event.key == pygame.K_DOWN:
                lead_y_change = 0


    lead_x += lead_x_change
    lead_y += lead_y_change

    gameDisplay.fill(white) ## color de el fondo de pantalla
    pygame.draw.rect(gameDisplay, black, [lead_x,lead_y,10,10]) ##dibujar un rectangulo
    pygame.display.update()## despues de tener todos los ajustes graficos renderizamos

    clock.tick(15)##clock


pygame.quit()
quit()