save project

snake.py

@@ -81,6 +81,7 @@ while True:
     text=mf.render(info,True,(0,0,10))
     screen.blit(text,(540,10))
     if x or y<0 or x>630 or y<450:
+        exit()
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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