auto save

snake.py

 import pygame
 from pygame import locals
-
+import random
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -55,8 +55,8 @@ 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)
+        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))
@@ -67,7 +67,7 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x,apple_y))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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