menu = {
'北京': {
'海淀': {
'五道口': {
'soho': {},
'网易': {},
'google': {}
},
'中关村': {
'爱奇艺': {},
'汽车之家': {},
'youku': {},
},
'上地': {
'百度': {},
},
},
'昌平': {
'沙河': {
'老男孩': {},
'北航': {},
},
'天通苑': {},
'回龙观': {},
},
'朝阳': {},
'东城': {},
},
'上海': {
'闵行': {
"人民广场": {
'炸鸡店': {}
}
},
'闸北': {
'火车战': {
'携程': {}
}
},
'浦东': {},
},
'山东': {},
}
1 def threeLM(dic):
2 while True:
3 for k in dic:print(k)
4 key = input('input>>').strip()
5 if key == 'b' or key == 'q':return key
6 elif key in dic.keys() and dic[key]:
7 ret = threeLM(dic[key])
8 if ret == 'q': return 'q'
9
10 threeLM(menu)
l = [menu]
while l:
for key in l[-1]:print(key)
k = input('input>>').strip() # 北京
if k in l[-1].keys() and l[-1][k]:l.append(l[-1][k])
elif k == 'b':l.pop()
elif k == 'q':break
三级菜单(练习)
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转载自blog.csdn.net/qq_37493425/article/details/87624291
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