auto save

snake.py

 import pygame
+import random 
 from pygame import locals
 
 # 初始化pygame，为使用pygame做准备
@@ -14,6 +15,7 @@ left=pygame.image.load("left.png")
 down=pygame.image.load("down.png")
 up=pygame.image.load("up.png")
 
+
 x=240
 y=120
 
@@ -23,6 +25,9 @@ body=pygame.image.load("body.png")
 fangxiang="right"
 tou=right
 
+apple_x=360
+apple_y=300
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -49,13 +54,23 @@ while True:
         y+=30
     if fangxiang == "up":
         y-=30
-
     position.append((x,y))
+    
+    if x==apple_x and y==apple_y:
+        num1=random.randint(1,22)
+        num2=random.randint(1,16)
+        apple_x=num1*30-30
+        apple_y=num2*30-30
+    else:
         position.pop(0)
+        
     screen.blit(background,(0,0))
-    screen.blit(apple,(60,90))
+    screen.blit(apple,(apple_x,apple_y))
     screen.blit(tou, position[-1])
     for i in range(len(position)-1):
         screen.blit(body, position[i])
+
+
+        
     pygame.display.update()      
     FPS.tick(3)
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