python三級菜單例題

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列印省、市、縣三級菜單可返回上一級可隨時退出程式

__author__ = "Alex Li"data = {    ‘北京‘:{        "昌平":{            "沙河":["oldboy","test"],            "天通苑":["鏈家地產","我愛我家"]        },        "朝陽":{            "望京":["平治","陌陌"],            "國貿":{"CICC","HP"},            "東直門":{"Advent","飛信"},        },        "海澱":{},    },    ‘山東‘:{        "德州":{},        "青島":{},        "濟南":{}    },    ‘廣東‘:{        "東莞":{},        "常熟":{},        "佛山":{},    },}exit_flag = Falsewhile not exit_flag:    for i in data:        print(i)    choice = input("選擇進入1>>:")    if choice in data:        while not exit_flag:            for i2 in data[choice]:                print("\t",i2)            choice2 = input("選擇進入2>>:")            if choice2 in data[choice]:                while not exit_flag:                    for i3 in data[choice][choice2]:                        print("\t\t", i3)                    choice3 = input("選擇進入3>>:")                    if choice3 in data[choice][choice2]:                        for i4 in data[choice][choice2][choice3]:                            print("\t\t",i4)                        choice4 = input("最後一層，按b返回>>:")                        if choice4 == "b":                            pass                        elif choice4 == "q":                            exit_flag = True                    if choice3 == "b":                        break                    elif choice3 == "q":                        exit_flag = True            if choice2 == "b":                break            elif choice2 == "q":                exit_flag = True

 

python三級菜單例題