import pygame
from pygame import locals
import random
pygame.init()
screen=pygame.display.set_mode((660,480))
FPSCLOCK = pygame.time.Clock()
background = pygame.image.load('bg.png')
right = pygame.image.load('right.png')     
food = pygame.image.load('apple.png')       
while True:
    for event in pygame.event.get():
        if event.type == locals.QUIT:
            exit()