save project

snake.py

 import pygame
-
+from pygame import locals
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 
 # 创建一个窗
-screen=pygame.display.set_mod((660,480))
+screen=pygame.display.set_mode((660,480))
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT: