Python之路-字符编码&数据类型补充（待更新）

Posted 2020-09-08

作业

三级菜单程序 

history =[menu]
while True:
    for item in history[-1]:
        print(item)
    choice = input("input your choice :").strip()
    if choice == ‘b‘ and len(history) > 1:
        history.pop()
    elif choice == ‘q‘: break
    else:
        if choice in history[-1]:
            history.append(history[-1][choice])

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