save project

snake.py

@@ -60,7 +60,7 @@ while True:
         apple_y = random.randint(0, 480)
         
     position.pop(0)
-    ifx<0 or x>630 or y<0 or y>450:
+    ifx<0 or x>630 or y<0 or y> 450:
         exit()
     screen.blit(background, (0,0))
     # 将贪吃蛇的头画上去