python小练习-实现三级菜单

时间：2023-02-13 17:08:46
 1 #三级菜单字典
 2 district = {
 3             "shanxi":{
 4                 "xian":{"huxian":1,"baqiao":2},
 5                 "hanzhong":{"yangxian":3,"chengu":4,"xixiang":5},
 6                 "baoji":{"qishan":6,"fufeng":7,"meixian":8},
 7                 },
 8             "guangdong":{
 9                 "shenzhen":{"A":9,"B":10,"C":11},
10                 "guangzhou":{"E":12,"F":13,"G":14},
11                 "huizhou":{"X":15,"Y":16,"Z":17}
12                 }
 1 #递归实现三级菜单
 2 def menu(all_menu):
 3     while True:
 4         for sub_menu in all_menu:
 5             print sub_menu,":"
 6         choose = raw_input("please choose menu：")
 7         if choose in all_menu and isinstance(all_menu[choose],Iterable):
 8             menu(all_menu[choose])
 9         elif choose == "b":
10             break
11         elif choose == "q":
12             exit()
 1 #使用嵌套循环实现三级菜单
 2 while True:
 3     for first in district:
 4         print first,":"
 5     choose1 = raw_input("please choose menu1：")
 6     if choose1 in district:
 7         while True:
 8             for second in district.get(choose1):
 9                 print second,":"
10             choose2 = raw_input("please choose menu2:")
11             if choose2 in district.get(choose1):
12                 while True:
13                     for third in district.get(choose1).get(choose2):
14                         print third
15                     choose3 = raw_input("please choose menu3:")
16                     if choose3 in district.get(choose1).get(choose2):
17                         pass
18                     elif choose3 == "b":
19                         break
20                     elif choose3 == "q":
21                         exit()
22             elif choose2 == "b":
23                 break
24 
25             elif choose2 == "q":
26                 exit()
27     elif choose1 == "q":
28         exit()

 

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