save project

snake.py

@@ -51,7 +51,7 @@ while True:
     if x == apple_x and y == apple_y:
     if x == apple_x and y == apple_y:
         apple_x=random.randint(0,660)
         apple_x=random.randint(0,660)
         apple_y=random.randint(0,480)
         apple_y=random.randint(0,480)
-    position.pop(0)
+    else:    position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     # 将贪吃蛇的头画上去