1 # 1.三级菜单
2 menu = {
3 '北京':{
4 '海淀':{
5 '五道口':{
6 'soho':{},
7 '网易':{},
8 'google':{}
9 },
10 '中关村':{
11 '爱奇艺':{},
12 '汽车之家':{},
13 'youku':{},
14 },
15 '上地':{
16 '百度':{},
17 },
18 },
19 '昌平':{
20 '沙河':{
21 '老男孩':{},
22 '北航':{},
23 },
24 '天通苑':{},
25 '回龙观':{},
26 },
27 '朝阳':{},
28 '东城':{},
29 },
30 '上海':{
31 '闵行':{
32 "人民广场":{
33 '炸鸡店':{}
34 }
35 },
36 '闸北':{
37 '火车战':{
38 '携程':{}
39 }
40 },
41 '浦东':{},
42 },
43 '山东':{},
44 }
45
46 exit_tag=True
47 while exit_tag:
48 for key in menu:
49 print(key)
50 choice=input('>: ').strip()
51 if choice == 'quit':
52 exit_tag=False
53 continue
54 if len(choice) == 0:
55 continue
56
57 if choice in menu:
58 while exit_tag:
59 first= menu[choice]
60 for key2 in second: #第二层循环
61 print(key2)
62 choice2=input('>>：').strip()
63 if choice2 == 'bye':
64 break
65 if choice2 == 'quit':
66 exit_tag = False
67 continue
68 if len(choice2) == 0:
69 continue
70 if choice2 in first:
71 while exit_tag:
72 second = first[choice2]
73 for key3 in second: #第三层
74 print(key3)
75 choice3 = input('>>>: ').strip()
76 if choice3 == 'bye':
77 break
78 if choice3 == 'quit':
79 exit_tag = False
80 continue
81 if choice3 in third:
82 third = second[choice3]
83 for key4 in third:
84 print(key4)
85 choice4 = input('>>>>: ').strip()
86 if choice4 == 'bye':
87 break
88 if choice4 == 'quit':
89 exit_tag=False
90 continue
91 #
92 # 2.购物车程序：
93 good = {
94 '1':{'apple': 100},
95 '2':{'tesla': 100},
96 '3':{'mac': 100},
97 '4':{'lenovo': 100},
98 '5':{'chicken': 100},
99 }
100 shoping_list = []
101 exit_tag = True
102 count = 0
103 while exit_tag:
104 account = input('your acconut: ').strip('|')
105 password = input('your password: ').strip()
106 with open('login.txt', 'r') as file:
107 pair = file.read().split('|')
108 name, secert = pair
109 # print(name,secert)
110 if account not in pair:
111 print('用户名不存在')
112 if account == name and password == secert:
113 print('登陆成功')
114 salary = input('请输入你的工资： ').strip()
115 if salary == 'quit':
116 exit_tag = False
117 continue
118 if not salary.isdigit():
119 print('请重新输入（工资必须为数字)：')
120 else:
121 salary_balance = int(salary)
122 while exit_tag:
123 for key in good:
124 print(key,good[key])
125 serial = input('请输入商品编号： ').strip()
126 if serial == 'quit':
127 exit_tag = False
128 continue
129 if serial in good:
130 number = input('请输入购买的商品个数：').strip()
131 if number.isdigit():
132 goods_name = list(good[serial])[0]
133 goods_price = good[serial][goods_name]
134 print('你选择购买的商品为：%s 单价为：%s 购买个数为： %s' %(goods_name,goods_price,number))
135 shoping_list.append((goods_name,goods_price,number))
136 goods_sum = int(goods_price)*int(number)
137 salary_balance -= goods_sum
138 if salary_balance < 0:
139 print('你的账户余额不足，退出!')
140 exit_tag = False
141 continue
142 else:
143 continue
144 else:
145 print('商品个数必须为数字：')
146 else:
147 print('请输入正确的商品编号： ')
148 print('你的购物清单为%s \n' %(shoping_list))
149 else:
150 print('你输入的密码不对，请重新输入！')
151 count += 1
152 if count > 2:
153 print('你尝试的次数过多，请稍后再试！')
154 exit_tag =False
155 continue
