save project

snake.py

@@ -56,9 +56,12 @@ 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)
+    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)
     # 将背景图画上去
     screen.blit(background, (0, 0))