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()
 
@@ -54,10 +54,13 @@ 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)
-    position.pop(0)     
+    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))
     # 将贪吃蛇的头画上去