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三级菜单要求：1.可以一层一层的进入到所有层；2.可以在每一层返回上一层；输入b3.可以在任意层退出 主菜单；输入q #初级：（原始代码）
#__author:"hanhankeji"
#date: 2019/12/11
menu = {
"北京":{
"朝阳":{
"国贸":{
"CICC":{},
"hp":{},
"CCTV":{},
},
},
"望京":{
"momo":{},
"奔驰":{},
"360":{},
"联邦":{},
},
"三里屯":{
"优衣库":{},
"大使馆":{},
"酒吧":{},
"苹果":{},
},
"昌平":{
"沙河":{
"老男孩":{},
"包子铺":{},
},
"天通苑":{
"链家":{},
"我爱我家":{},
"汽修厂":{},
},
"回龙观":{},
"海定":{
"五道口":{
"谷歌":{},
"搜狐":{},
"网易":{},
"搜狗":{},
"快手":{},
"清华":{},
"北大":{},
},
"中关村":{
"优酷":{},
"爱奇艺":{},
"腾讯":{},
"汽车之家":{},
"新东方":{},
"炸鸡店":{},
"南翔":{},
},
},
},
},
"上海":{
"浦东区":{
"陆家嘴":{
"CICC":{},
"高盛":{},
"摩根":{},
},
"外滩":{},
"东方明珠":{},
},
"闸北区":{},
"黄浦区":{},
"徐汇区":{},
"嘉定区":{},
},
"山东":{
"济南":{
"市中区":{},
"历下区":{},
"天桥区":{},
"桂英渠":{},
"长清区":{},
},
"德州":{},
"青岛":{},
"泰安":{},
"枣庄":{},
},
"江苏":{
"南京市":{},
"苏州市":{},
"常州":{},
"张家港市":{},
"大丰市":{},
},
"重庆":{},
"浙江":{},
}
back_flag = False
exit_falg = False
while not back_flag and not exit_falg :
for i in (menu):
print(i)
choice = input("输入你的省>>:").strip()
if choice == "q":
exit_falg = True
if choice in menu :
while not back_flag and not exit_falg:
for j in menu[choice]:
print(j)
choice2 = input("输入你的县级>>:").strip()
if choice2 == "q":
exit_falg = True
if choice2 == "b":
back_flag = True
if choice2 in menu[choice]:
while not back_flag and not exit_falg:
for k in menu[choice][choice2]:
print(k)
choice3 = input("输入你的市级>>:")
if choice3 == "q":
exit_falg = True
if choice3 == "b":
back_flag = True
if choice3 in menu[choice][choice2]:
while not back_flag and not exit_falg:
for l in menu[choice][choice2][choice3]:
print(l)
choice4 = input("输入区级>>:").strip()
print(" last leavel!")
if choice4 == "b" :
back_flag = True
if choice4 == "q" :
exit_falg = True
else:
back_flag =False
else:
back_flag = False
else:
back_flag = False
高级版本：
#__author:"hanhankeji"
#date: 2019/12/17
menu = {
"北京":{
"朝阳":{
"国贸":{
"CICC":{},
"hp":{},
"CCTV":{},
},
},
"望京":{
"momo":{},
"奔驰":{},
"360":{},
"联邦":{},
},
"三里屯":{
"优衣库":{},
"大使馆":{},
"酒吧":{},
"苹果":{},
},
"昌平":{
"沙河":{
"老男孩":{},
"包子铺":{},
},
"天通苑":{
"链家":{},
"我爱我家":{},
"汽修厂":{},
},
"回龙观":{},
"海定":{
"五道口":{
"谷歌":{},
"搜狐":{},
"网易":{},
"搜狗":{},
"快手":{},
"清华":{},
"北大":{},
},
"中关村":{
"优酷":{},
"爱奇艺":{},
"腾讯":{},
"汽车之家":{},
"新东方":{},
"炸鸡店":{},
"南翔":{},
},
},
},
},
"上海":{
"浦东区":{
"陆家嘴":{
"CICC":{},
"高盛":{},
"摩根":{},
},
"外滩":{},
"东方明珠":{},
},
"闸北区":{},
"黄浦区":{},
"徐汇区":{},
"嘉定区":{},
},
"山东":{
"济南":{
"市中区":{},
"历下区":{},
"天桥区":{},
"桂英渠":{},
"长清区":{},
},
"德州":{},
"青岛":{},
"泰安":{},
"枣庄":{},
},
"江苏":{
"南京市":{},
"苏州市":{},
"常州":{},
"张家港市":{},
"大丰市":{},
},
"重庆":{},
"浙江":{},
}
current_layer = menu #实现动态循环
parent_layers = [] #保存所有父级， 最后一个元素永远都是父级
# parent_list = []
while True:
for i in current_layer:
print(i)
choice = input("请输入选项>>:").strip()
if len(choice) == 0 : continue
if choice in current_layer :
# parent_layers = current_layer[choice] #改之前相当于父亲
parent_layers.append(current_layer) #在进入下一层之前，把当前层（也就是下一层的父级）追加到列表中
#下一次loop，当用户选择b的时候后，就可以直接取列表的最后一个值出来就OK了·
current_layer = current_layer[choice] #改成了子层
elif choice == "b":
#current_layer = parent_layers.pop()
if parent_layers : #[]
current_layer = parent_layers.pop()#取出列表的最后一个值
# current_layer = parent_layers #把子层改成父亲
elif choice == "q" :
break
else:
print("没有这个选项，请确认!")
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原文地址：https://www.cnblogs.com/hanhankeji/p/12054299.html
时间： 2024-10-11 07:42:58