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()
@@ -55,9 +56,12 @@ while True:
         y += 30
     position.append((x, y))
     if x == apple_x and y == apple_y:
-        apple_x = ramdom.randint(0,660)
-        apple_y = ramdom.randint(0,480)
-    position.pop(0)
+        num1 = ramdom.randint(1,22)
+        num2 = ramdom.randint(1,16)
+        apple_x = 30*num1-30
+        apple_y = 30*num2-30
+    else
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去