save project

snake.py

 import pygame
 from pygame import locals
-
+import random
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
@@ -54,8 +54,10 @@ while True:
         y += 30
     position.append((x, y))
     if x == apple_x and y == apple_y:
-        apple_x = random.randint(0,660)
-        apple_y = random.randint(0,480)
+       num1=random.randint(1,22)
+       num2=random.randint(1,16)
+       apple_x=30*num1-30
+       apple_y=30*num2-30
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))