为什么每次运行一个pygame的程序时会出现这个↓?怎么办?
File "C:\Users\lyb\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pygame\sprite.py", line 115, in __init__
self.add(*groups)
File "C:\Users\lyb\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pygame\sprite.py", line 133, in add
self.add(*group)
TypeError: add() argument after * must be an iterable, not pygame.Surface