save project

snake.py

 import pygame
 # 初始化pygame，为使用pygame做准备
 pygame.init()
+
+
 screen = pygame.display.set_mode((680,480))
 while True:
    for event in pygame. event.get():
@@ -8,6 +10,9 @@ while True:
            exit()
 
 screen.blit(background,(0, 0))
+
 screen.blit(right,(240, 120))  
+
 screen.blit(food,(360, 300))
+
 pygame.display.update()     
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