save project

snake.py

 import pygame
+import random
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
@@ -52,6 +53,9 @@ while True:
     else:
         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)
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -62,7 +66,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (cx,apple_y ))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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