save project

snake.py

+import random
 import pygame
 from pygame import locals
-import random
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
@@ -57,10 +57,12 @@ while True:
     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)
+        num1 = random.randint(1, 22)
+        num2 = random.randint(1, 16)
+        apple_x = num1 * 30 - 30
+        apple_y = num2 * 30 - 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