# Author :yanpengtao data = { "北京": { "昌平": { "沙河": ["oldboy", "test"], "天通苑": ["链家地产", "我爱我家"], }, "朝阳": { "望京": ["奔驰", "陌陌"], "国贸": ["CICC", "HP"], "东直门": ["Advent", "飞信"] }, "海淀": { "": [], "": [], "": [], }, }, "山东": {}, "广东": {}, } exit_flag = False while not exit_flag: for i in data: print(i) # 打印第一层 choice = input("选择进入1>>>") if choice in data : while not exit_flag: for i2 in data[choice]: print("\t", i2) choice2 = input("选择进入2>>>") if choice2 in data[choice]: while not exit_flag: for i3 in data[choice][choice2]: print("\t", i3) choice3 = input("选择进入3>>>") if choice3 in data[choice][choice2]: for i4 in data[choice][choice2][choice3]: print(i4) choice4 = input("输入b返回上一级>>>") 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 if choice == "b": print("已经是最上一级!") break