五级菜单

menu = {
    ‘贵州‘:{
        ‘凯里‘:{
            ‘剑河‘:{
                ‘革东‘:{},
                ‘柳川‘:{},
                ‘南哨‘:{
                    ‘高定‘:{},
                    ‘乌沙‘:{},
                    ‘翁座‘:{}
                }
            },
            ‘黎平‘:{
                ‘德化‘:{},
                ‘尚重‘:{},
                ‘大架‘:{},
            },
            ‘榕江‘:{
                ‘朗洞‘:{},
                ‘平江‘:{},
                ‘两汪‘:{}
            },
        },
        ‘遵义‘:{
            ‘金沙‘:{
                ‘柳塘‘:{},
                ‘龙坝‘:{},
            },
            ‘仁怀‘:{
                ‘茅台‘:{}
            },
            ‘开阳‘:{},
        },
        ‘安顺‘:{},
        ‘兴义‘:{},
        ‘都匀‘:{},
        ‘六盘水‘:{}
    },
    ‘上海‘:{
        ‘闵行‘:{
            "漕宝路":{
                ‘金泰公寓‘:{},
                ‘三佳花苑‘:{}
            }
        },
        ‘徐汇‘:{
            ‘徐家汇‘:{
                ‘汇金百货‘:{}
            },
            ‘上海体育馆‘:{},
            ‘交通大学‘:{},
            ‘上海图书馆‘:{}
        },
        ‘静安‘:{},
        ‘浦东‘:{},
        ‘黄浦‘:{},
        ‘普陀‘:{},
        ‘松江‘:{},
        ‘青浦‘:{},
        ‘金山‘:{}
    },
    ‘浙江‘:{
        ‘杭州‘:{},
        ‘金华‘:{},
        ‘宁波‘:{},
        ‘绍兴‘:{},
        ‘嘉兴‘:{}
    },
}



tag=True
while tag:
    menu1=menu
    for key in menu1: # 打印第一层
        print(key)

    choice1=input(‘第一层>>: ‘).strip() # 选择第一层

    if choice1 == ‘a‘: # 输入a，则返回上一级
        break
    if choice1 == ‘b‘: # 输入b，则退出整体
        tag=False
        continue
    if choice1 not in menu1: # 输入内容不在menu1内，则继续输入
        continue

    while tag:
        menu_2=menu1[choice1] # 拿到choice1对应的一层字典
        for key in menu_2:
            print(key)

        choice2 = input(‘第二层>>: ‘).strip()

        if choice2 == ‘a‘:
            break
        if choice2 == ‘b‘:
            tag = False
            continue
        if choice2 not in menu_2:
            continue

        while tag:
            menu_3=menu_2[choice2]
            for key in menu_3:
                print(key)

            choice3 = input(‘第三层>>: ‘).strip()
            if choice3 == ‘a‘:
                break
            if choice3 == ‘b‘:
                tag = False
                continue
            if choice3 not in menu_3:
                continue

            while tag:
                menu_4=menu_3[choice3]
                for key in menu_4:
                    print(key)

                choice4 = input(‘第四层>>: ‘).strip()
                if choice4 == ‘a‘:
                    break
                if choice4 == ‘b‘:
                    tag = False
                    continue
                if choice4 not in menu_4:
                    continue

                while tag:
                    menu_5 = menu_4[choice4]
                    for key in menu_5:
                        print(key)

                    choice5 = input(‘第五层>>: ‘).strip()
                    if choice5 == ‘a‘:
                        break
                    if choice5 == ‘b‘:
                        tag = False
                        continue
                    if choice5 not in menu_5:
                        continue

                    while tag:
                        menu_6 = menu_5[choice5]
                        for key in menu_6:
                            print(key)

                        choice6 = input(‘第四层>>: ‘).strip()
                        if choice6 == ‘a‘:
                            break
                        if choice6 == ‘b‘:
                            tag = False
                            continue
                        if choice6 not in menu_6:
                            continue

        # 第六层内没数据了，无需进入下一层