购物车-白红宇

需求    要求用户输入总资产，例如：2000    显示商品列表，让用户根据序号选择商品，加入购物车    购买，如果商品总额大于总资产，提示账户余额不足，否则，购买成功。    附加：可充值、某商品移除购物车

测试信息goods = [    {"name": "电脑", "price": 1999},    {"name": "鼠标", "price": 10},    {"name": "游艇", "price": 20},    {"name": "美女", "price": 998},]

                         
goods 
=
[
    
{ 
"name"
: 
"电脑"
, 
"price"
: 
1999
},
    
{ 
"name"
: 
"鼠标"
, 
"price"
: 
10
},
    
{ 
"name"
: 
"游艇"
, 
"price"
: 
20
},
    
{ 
"name"
: 
"美女"
, 
"price"
: 
998
},
]
# 定义函数，格式化菜单输出
def
menu():
    
count
=
0
    
for
i 
in
goods:
        
print
(
'【{0}】    {1}     {2}'
.
format
(count,i[
'name'
],i[
'price'
]))
        
count
+
=
1
# 定义购物车空列表
goods_list
=
[]
tag
=
True
while
tag:
    
money
=
input
(
'How much are you ?'
).strip()
    
# 判断输入的数据类型
    
if
money.isdigit() 
and
len
(money) !
=
0
:
        
money 
=
int
(money)
        
while
tag:
            
menu()
            
choice
=
input
(
'请输入你要购买的商品序号：'
).strip()
            
if
choice.isdigit() 
and
len
(choice) !
=
0
:
                
choice
=
int
(choice)
            
if
choice >
=
0
and
choice <
=
3
:
                
# 取出所买商品的信息
                
g_l
=
[]
                
for
i 
in
goods:
                    
g_l.append({i[
'name'
]: i[
'price'
]})
                
info
=
g_l[choice]
                
price_list
=
list
(info.values())
                
price
=
int
(price_list[
0
])
                
name_list
=
list
(info.keys())
                
# 使用a的值来控制下面两层while循环
                
a
=
1
                
while
a 
=
=
1
:
                    
if
money >
=
price:
                        
money
=
money 
-
price
                        
print
(
'商品已加入购物车，当前余额为{}'
.
format
(money))
                        
goods_list.append(name_list[
0
])
                        
while
a 
=
=
1
:
                            
print
(
'当前购物车里商品：'
,goods_list)
                            
choices
=
input
(
'''
【E】     结账
【D】     删除商品
【S】     继续购买
 
请选择：'''
).strip().lower()
                            
if
choices !
=
'e'
and
choices !
=
'd'
and
choices !
=
's'
:
                                
print
(
'选择错误，请重新输入：'
)
                                
continue
                            
if
choices 
=
=
's'
:
                                
a
=
0
                                
break
                            
if
choices 
=
=
'e'
:
                                
print
(
'已结账，当前余额为{}'
.
format
(money))
                                
a
=
0
                                
tag
=
False
                            
if
choices 
=
=
'd'
:
                                
print
(goods_list)
                                
delet
=
input
(
'请输入你想删除的商品：'
).strip()
                                
if
delet 
in
goods_list:
                                    
goods_list.remove(delet)
                                    
print
(
'%s 删除成功！'
%
delet)
                                    
continue
                                
else
:
                                    
print
(
'此商品不在购物车'
)
                                
continue
                    
else
:
                        
print
(
'你买不起这个,请选择：'
)
                        
choicess
=
input
(
'''
【A】     重新选择商品
【B】     充值
【C】     退出
请选择：'''
).strip().lower()
                        
if
choicess 
=
=
'a'
:
                            
a
=
0
                        
if
choicess 
=
=
'c'
:
                            
exit()
                        
while
a 
=
=
1
:
                            
if
choicess 
=
=
'b'
:
                                
recharge
=
input
(
'请输入充值金额：'
).strip()
                                
if
recharge.isdigit() 
and
len
(recharge) !
=
0
:
                                    
recharge 
=
int
(recharge)
                                    
money 
=
money 
+
recharge
                                    
print
(
'充值成功，当前金额为：'
,money)
                                    
break
                                
else
:
                                    
print
(
'充值金额有误'
)
                                    
continue
            
else
:
                
print
(
'没有此商品，请重新选择'
)
                
continue
    
else
:
        
print
(
'你的输入有误,请输入数字：'
)
        
continue
本文转自lyndon博客51CTO博客，原文链接http://blog.51cto.com/lyndon/1947432如需转载请自行联系原作者                                                                                                                                                                            迟到的栋子
        
      