[python] 初学python，级联菜单输出

#Author:shijt

china_map = {
    "河北": {
        '石家庄': ['辛集', '正定', '晋州'],
        '邯郸': ['涉县', '魏县', '磁县'],
        '衡水': ['饶阳', '安平', '深州']
    },
    "河南": {
        '郑州': ['巩义', '新郑', '登封'],
        '开封': ['兰考', '通许', '尉氏'],
        '洛阳': ['宜阳', '孟津', '新安']
    },
    "山西": {
        '太原': ['清徐', '阳曲', '古交'],
        '大同': ['左云', '大同', '广灵'],
        '晋城': ['泽州', '阳城', '泌水']
    }
}
exit_flag=False
while not exit_flag:
    for i1 in china_map:
        print(i1)
    choice1=input(">>>choice1:")
    if choice1 in china_map:
        while not exit_flag:
            for i2 in china_map[choice1]:
                print("	"+i2)
            choice2 = input("	>>>choice2:")
            if choice2 in china_map[choice1]:
                while not exit_flag:
                    for i3 in china_map[choice1][choice2]:
                        print("		"+i3)
                    choice3 = input("		>>>choice3:")
                    if choice3 in china_map[choice1][choice2]:
                        print(choice3+"位于"+choice1+choice2)
                    elif choice3=="b":
                        break
                    elif choice3=="q":
                        exit_flag=True
            elif choice2 == "b":
                break
            elif choice2 == "q":
                exit_flag = True
    elif choice1 == "q":
        exit_flag = True
    else:
        print("input error")

级联菜单输出