python_day2_homework_1（简单购物商城） 

'''简单购物商城（要求）：
1，商品展示，价格
2，买，加入购物车
3，付款，钱不够
'''
 1 #_*_ coding: utf-8 _*_
 2 __author__ = 'A-rno'
 3 
 4 meu_list_1 = {
 5     'phone' : 100,
 6     'bike' : 50,
 7     'bnana' : 200,
 8     'ball' : 1000,
 9 }#商品列表
10 
11 meu_list_2 = [
12     ['a','pay for it'],
13     ['b','out'],
14 ]#付款与退出列表
15 
16 def show_meu(meu_list):#主菜单显示
17     if type(meu_list) == dict:
18         for num,key in enumerate(meu_list.keys()):
19             print num,',',key,',',meu_list[key]
20     if type(meu_list) == list:
21         for num,vel in meu_list:
22             print num,',',vel
23     pass
24 
25 def input_judge():#输入判断
26     user_input = raw_input("input you choice:").strip()
27     if user_input.isdigit():
28         user_input = int(user_input)
29         return user_input
30     elif user_input == 'b':
31         return 'out'
32     elif user_input == 'a':
33         return 'pay'
34     else:
35         print("wrong input!!!\n")
36         return 'wrong'
37 
38 def money_judge(money,user_backpak):#付款时金额是否足够
39     all_cost = 0
40     for Type_name in user_backpak.keys():
41         all_cost += user_backpak[Type_name][1]
42     if money >= all_cost:
43         print("You pay successfully!!!\n")
44         return money - all_cost
45     else:
46         print("You don't have enough money!!!\n")
47         return -1
48 
49 def show_now(user_bakpak,user_mon):#显示现在背包内容以及现有钱数
50     print "you bakpak have:",user_bakpak
51     print "your mony:",user_mon
52 
53 if __name__ == '__main__':
54     user_backpak = {}
55     user_mon = 1000
56     while True:
57         show_meu(meu_list_1)#显示菜单1
58         show_meu(meu_list_2)#显示菜单2
59         show_now(user_backpak,user_mon)#显示当前背包状态和钱数
60         input_judge_num = input_judge()
61         if input_judge_num == 'pay':#用户若选择付款
62             if user_backpak == {}:#查看背包是否为空
63                 print("backpak is empty!!!\n")
64                 continue
65             else:#背包不为空
66                 money_judge_num = money_judge(user_mon,user_backpak)#判断钱够不够
67                 if money_judge_num == -1:#钱不够
68                     continue
69                 else:#钱足够 付款成功 减少钱数 清空背包
70                     user_mon = money_judge_num
71                     user_backpak.clear()
72                     continue
73         if input_judge_num == 'out':#退出判断
74             break
75         elif input_judge_num == 'wrong':#错误输入判断
76             continue
77         else:#正确选取了商品
78             user_choice = meu_list_1.keys()[input_judge_num]#获取商品名称
79             user_cost = meu_list_1[user_choice]#获取商品钱数
80             if user_choice in user_backpak:#若当前选择的商品在背包中 商品数量加1
81                 user_backpak[user_choice][0] += 1
82             else:#若当前选择的商品不在背包中 就添加该商品。 格式，商品：[数量，总价]
83                 user_backpak[user_choice] = [1,0]
84             user_backpak[user_choice][1] = user_backpak[user_choice][0]*user_cost#商品总价

-------------------------结果--------------------------

0 , phone , 100
1 , bike , 50
2 , bnana , 200
3 , ball , 1000
a , pay for it
b , out
you bakpak have: {}
your mony: 1000
input you choice:0


0 , phone , 100
1 , bike , 50
2 , bnana , 200
3 , ball , 1000
a , pay for it
b , out
you bakpak have: {'phone': [1, 100]}
your mony: 1000
input you choice:a
You pay successfully!!!

 

0 , phone , 100
1 , bike , 50
2 , bnana , 200
3 , ball , 1000
a , pay for it
b , out
you bakpak have: {}
your mony: 900
input you choice:b

Process finished with exit code 0

posted @ 2016-10-27 19:09  A-rno  阅读(131)  评论(0)    收藏  举报