Python作业day2购物车
2020-01-31 21:28
260 查看
流程图：
实现情况：
可自主注册，
登陆系统可购物，充值（暂未实现），查询余额。
撸了两天一夜的代码，不多说，直接上码，注释神马的后面再说
1 #!/usr/bin/env python
2 # -*- coding:utf-8 -*-
3 shopping_list = [
4 ['Iphone 6s plus',5800],
5 ['Lumia',3800],
6 ['Charge',45],
7 ['Data line',35],
8 ['MI 5 PRO',2299],
9 ['MX4',1999],
10 ]
11 salary = 100000
12 total = 0
13 shop_list = []
14
15 while True:
16 welcome_1 = "欢迎使用XXX购物商城"
17 we_1 = welcome_1.center(30,'*')
18 print(we_1)
19 choice_1 = "1.注册 2.登陆 q.退出"
20 ch_1 = choice_1.center(32,'*')
21 exit_1 = "谢谢使用，欢迎下次光临"
22 ex_1 = exit_1.center(30,'*')
23 error_1 = "您输入的用户已存在，请重新输入"
24 e_1 = error_1.center(30,'-')
25 error_2 = "密码不能为空，请重新输入"
26 e_2 = error_2.center(30,'-')
27 error_3 = "您输入的密码太短，请重新输入"
28 e_3 = error_3.center(30,'-')
29 error_4 = "您的输入有误, 请重新输入"
30 e_4 = error_4.center(26,'*')
31 error_5 = " 您的账号已被锁定，请联系管理员 "
32 e_5 = error_5.center(12,'*')
33 print(ch_1 )
34 sr_1 = input("Please input:")
35 if sr_1 == '1':
36 while True:
37 with open('ming.txt','r')as r_1:
38 temp = r_1.readlines()
39 tlist = []
40 for tline in temp:
41 tline = tline.strip().split(':')
42 tlist.append(tline[0])
43 useradd = input("Please create user:")
44 success_1 = "成功创建用户：%s" %(useradd)
45 if useradd in tlist:
46 print(e_1 )
47 elif useradd == "exit":
48 break
49 else:
50 passwd = input("Please create a password(Letters and numbers)：")
51 length = len(passwd)
52 if length == 0 :
53 print(e_2)
54 elif length > 7:
55 with open('ming.txt','a')as r_3:
56 w_1 = '%s:%s:0\n' %(useradd,passwd)
57 r_3.write(w_1)
58 s_1 = success_1.center(30,'-')
59 print(s_1)
60 break
61 else:
62 print(e_3)
63
64 elif sr_1 == '2':
65 flag = False
66 while True:
67 username = input("Please enter a user name:")
68 l = open('lock.txt','r')
69 for lline in l.readlines():
70 lline = lline.strip()
71 if username == lline:
72 print("账号被锁")
73 flag = True
74 l.close()
75 break
76 if flag == True:
77 break
78
79 u = open('ming.txt','r')
80 for uline in u.readlines():
81 user,password,mony = uline.strip().split(':')
82
83 if username == user:
84 i = 0
85 while i < 3:
86 passwd = input('Please enter a password:')
87 i +=1
88 if passwd == password:
89 print('欢迎%s登陆在线购物平台' % username)
90 flag = True
91 u.close()
92 break
93 else:
94 if i >= 3:
95 with open('lock.txt','a') as l_2:
96 l_2.write(username + '\n')
97 l.close()
98 exit("试了太多次,将被锁定，请联系管理员")
99 print('密码输入错误，还有%d次机会' % (3 - i))
100 break
101 else:
102 print("用户输入错误，请重新输入")
103
104
105 while True:
106 print("1.购物 2.查看购物车 3.查询余额 4.充值 b.返回登陆 q.退出")
107 print("------------------------------------------------")
108 choice_2 = input("输入序号：")
109 flag_1 = False
110 while True:
111 if choice_2 == "1":
112 while True:
113 for index,g in enumerate(shopping_list):
114 print(index,g[0],g[1])
115 print("-------------------------")
116 print("c.查看购物车 b.返回 q.退出")
117 print("-------------------------")
118 choice = input("键入数字选择商品：").strip()
119 if choice.isdigit():
120 choice = int(choice)
121 p_price = shopping_list[choice][1]
122 if p_price < salary:
123 shop_list.append(shopping_list[choice])
124 total += p_price
125 salary -= p_price
126 print("-------------------------")
127 print("您购买了%s，余额为%s"%(shopping_list[choice][0],salary))
128 print("-------------------------")
129 else:
130 print("-------------------------")
131 print("您的余额不足")
132 print("-------------------------")
133 elif choice == "c":
134 while True:
135 print("----------购物车----------")
136 for k,v in enumerate(shop_list):
137 print(k,v[0],v[1])
138 print("已消费金额为：%s"%total)
139 print("您的可用余额：%s"%salary)
140 print("-------------------------")
141 print("d.删除商品 b.返回购物 q.结算退出")
142 print("-------------------------")
143 choice_1 = input("请键入字母选择功能：")
144 print("-------------------------")
145 if choice_1 == "d":
146 print("-------------------------")
147 print("输入数字为删除商品，输入字母b为返回购物车")
148 print("-------------------------")
149 while True:
150 choice_2 = input("请选择：")
151 if choice_2.isdigit():
152 choice_2 = int(choice_2)
153 d_price = shop_list[choice_2][1]
154 shop_list.remove(shop_list[choice_2])
155 total -= d_price
156 salary += d_price
157 print("-------------------------")
158 print("商品%s删除成功，可用余额为：%s"%(shop_list[choice_2][0],salary))
159 print("-------------------------")
160 elif choice_2 == "b":
161 break
162 elif choice_1 == "b":
163 flag = True
164 break
165 else:
166 print("----------购物清单----------")
167 for k,v in enumerate(shop_list):
168 print(k,v[0],v[1])
169 print("总消费金额为：%s"%total)
170 print("您的可用余额：%s"%salary)
171 print("--------欢迎下次再来-------")
172 exit(0)
173 elif choice == "b":
174 break
175 elif choice == "q":
176 print("----------购物清单----------")
177 for k,v in enumerate(shop_list):
178 print(k,v[0],v[1])
179 print("总消费金额为：%s"%total)
180 print("您的可用余额：%s"%salary)
181 print("--------欢迎下次再来--------")
182 exit(0)
183 else:
184 print("-------------------------")
185 print("您的输入有误，请重新输入")
186 print("-------------------------")
187 if flag == True:
188 break
189 elif choice_2 == "2":
190 print("----------购物车----------")
191 for k,v in enumerate(shop_list):
192 print(k,v[0],v[1])
193 print("已消费金额为：%s"%total)
194 print("您的可用余额：%s"%salary)
195
196 print("-------------------------")
197 break
198 elif choice_2 == "3":
199 with open('ming.txt','r')as m_1:
200 mony_1 = m_1.readlines()
201 for mline in mony_1:
202 (user,password,mony) = mline.strip().split(':')
203 print(salary)
204 flag_1 = True
205 break
206 break
207
208 elif choice_2 == "4":
209 z = 0
210 while z < 1:
211 chongzhi = int(input("输入金额:"))
212 passwd_1 = input("请输入密码：")
213 m = open('ming.txt','r+')
214 m_2 = m.readlines()
215
216 for mline in m_2:
217 (user,password,mony) = mline.strip().split(':')
218
219 if passwd_1 == password:
220 mony_2 = (chongzhi + int(mony))
221
222 w_2 = '%s:%s:%s\n' %(username,password,mony_2)
223 m.write(w_2)
224 print("充值成功")
225 print(mony)
226 flag = True
227 break
228 continue
229 break
230 if flag == True:
231 break
232
233 elif choice_2 == "b":
234 flag = True
235 break
236
237 elif choice_2 == "q":
238 exit(ex_1)
239 else:
240 print(e_4)
241 break
242 break
243 if flag == True:
244 break
245 break
246 elif sr_1 == 'q':
247 exit(ex_1)
248 else:
249 print(e_4)
250 print(' ')
251
252
253
购物车
转载于:https://www.cnblogs.com/spykids/p/5163108.html
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