tag = True while tag:print("level")choice = input("level>>>").strip() #作用是暫停 不會一直死循環if choice == "quit":break #終止當前循環進入到上一層if choice == "quit_all": tag = False #不用一層層退出 直接退出整個循環while tag:print("level2")choice = input("leve2>>>").strip()if choice == "quit": breakif choice == "quit_all": tag = Falsewhile tag:choice = input("leve3>>>").strip()if choice == "quit": breakif choice == "quit_all": tag = False
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