save project

snake.py

@@ -67,7 +67,7 @@ while True:
     else:
         position.pop(0)
 
-    if x < 0 or x > 630 or y < 0 or y > 340:
+    if x < 0 or x > 630 or y < 0 or y > 450:
         exit()
 
     position.append((x, y))
@@ -88,4 +88,4 @@ while True:
     screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(4)
\ No newline at end of file