个人中心
gpt4 book ai didi

Python实现购物车功能的方法分析

转载 作者：qq735679552 更新时间：2022-09-28 22:32:09 26 4
gpt4 key购买 nike

CFSDN坚持开源创造价值，我们致力于搭建一个资源共享平台，让每一个IT人在这里找到属于你的精彩世界.

这篇CFSDN的博客文章Python实现购物车功能的方法分析由作者收集整理，如果你对这篇文章有兴趣，记得点赞哟.

本文实例讲述了Python实现购物车功能的方法。分享给大家供大家参考，具体如下:

1、程序的源代码如下:

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
salary = input ( 'input your salary:' )
if salary.isdigit:
   salary = int (salary)
else :
   exit( 'salary is not digit!!' )
welcome_msg = 'welcome to our shoping mall'
print (welcome_msg.center( 50 , '-' ))
product_list = [
   ( 'Iphone' , 5888 ),
   ( 'Mac Air' , 8000 ),
   ( 'XiaoMi' , 19.9 ),
   ( 'coffee' , 30 ),
   ( 'Tesla' , 820000 ),
   ( 'Bike' , 700 ),
   ( 'Cloth' , 200 )
]
shop_car = []
#推出标志位
exit_flag = 0
while exit_flag is not True :
   print ( 'product list :' .center( 50 , '-' ))
   for item in enumerate (product_list):
     index = item[ 0 ]   #获得商品序号
     p_name = item[ 1 ][ 0 ]  #获得商品名称
     p_price = item[ 1 ][ 1 ]  #获得商品价格
     print (index,p_name,p_price)
   user_choice = input ( '[q=quit,c=check] what do you want to buy?:' )
   if user_choice.isdigit():
     user_choice = int (user_choice)
     if user_choice < len (product_list): #输入的商品序号要在范围之内
       p_item = product_list[user_choice] #选择的商品
       if p_item[ 1 ] < = salary: #买得起
         shop_car.append(p_item) #放入购物车
         salary - = p_item[ 1 ] #减钱
         print ( 'purchased products are:' .center( 40 , '-' ))
         for item in shop_car:
           print (item)
         print ( 'Your balance is [%s]' % salary)
       else :          #买不起
         print ( 'Your balance is [%s],cannot buy the product!' % salary)
     else :
       print ( 'we do not have the product,please input again!' )
   elif user_choice = = 'q' or user_choice = = 'quit' :
     print ( 'purchased products are:' .center( 40 , '-' ))
     for item in shop_car:
       print (item)
     print ( 'END ' .center( 40 , '-' ))
     print ( 'Your balance is [%s]' % salary)
     exit_flag = True
   elif user_choice = = 'c' or user_choice = = 'check' :
     print ( 'purchased products are:' .center( 40 , '-' ))
     for item in shop_car:
       print (item)
     print ( 'Your balance is %d' % salary)
     print ( 'Check ' .center( 40 , '-' ))
   else :
     print ( 'Incorrect input ,please input again!!' )

2、程序运行结果 。

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
input your salary: 10000
- - - - - - - - - - - welcome to our shoping mall - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - product list : - - - - - - - - - - - - - - - - - -
0 Iphone 5888
1 Mac Air 8000
2 XiaoMi 19.9
3 coffee 30
4 Tesla 820000
5 Bike 700
6 Cloth 200
[q = quit,c = check] what do you want to buy?: 0
added [[( 'Iphone' , 5888 )]] into shop car ,yourcurrent balence is 4112
- - - - - - - - - - - - - - - - - - product list : - - - - - - - - - - - - - - - - - -
0 Iphone 5888
1 Mac Air 8000
2 XiaoMi 19.9
3 coffee 30
4 Tesla 820000
5 Bike 700
6 Cloth 200
[q = quit,c = check] what do you want to buy?: 1
Your balance is [ 4112 ],cannot buy the product!
- - - - - - - - - - - - - - - - - - product list : - - - - - - - - - - - - - - - - - -
0 Iphone 5888
1 Mac Air 8000
2 XiaoMi 19.9
3 coffee 30
4 Tesla 820000
5 Bike 700
6 Cloth 200
[q = quit,c = check] what do you want to buy?:c
shop car list are [[( 'Iphone' , 5888 )]],your balance is 4112
- - - - - - - - - - - - - - - - - - product list : - - - - - - - - - - - - - - - - - -
0 Iphone 5888
1 Mac Air 8000
2 XiaoMi 19.9
3 coffee 30
4 Tesla 820000
5 Bike 700
6 Cloth 200
[q = quit,c = check] what do you want to buy?: 4
Your balance is [ 4112 ],cannot buy the product!
- - - - - - - - - - - - - - - - - - product list : - - - - - - - - - - - - - - - - - -
0 Iphone 5888
1 Mac Air 8000
2 XiaoMi 19.9
3 coffee 30
4 Tesla 820000
5 Bike 700
6 Cloth 200
[q = quit,c = check] what do you want to buy?:q
- - - - - - - - purchased products are: - - - - - - - - -
( 'Iphone' , 5888 )
- - - - - - - - - - - - - - - - - - END - - - - - - - - - - - - - - - - - -
Your balance is [ 4112 ]
Process finished with exit code 0

3、学习到的知识点 。

（1）print('product list :'.center(50,'-')) 。

?
1
2
>>> print ( 'product list :' .center( 50 , '-' ))
- - - - - - - - - - - - - - - - - - product list : - - - - - - - - - - - - - - - - - -

（2）for item in enumerate(product_list)

?
1
2
3
4
5
6
7
8
9
>>> for item in enumerate (product_list):
print (item)
( 0 , ( 'Iphone' , 5888 ))
( 1 , ( 'Mac Air' , 8000 ))
( 2 , ( 'XiaoMi' , 19.9 ))
( 3 , ( 'coffee' , 30 ))
( 4 , ( 'Tesla' , 820000 ))
( 5 , ( 'Bike' , 700 ))
( 6 , ( 'Cloth' , 200 ))

enumerate函数返回一个生成器对象：（index,item）的元组.

（3）这里使用了列表+元组的形式存储商品列表，而不是字典，因为字典是无序的，每次打印顺序都不一样，而且不能通过索引进行取值.

希望本文所述对大家Python程序设计有所帮助.

原文链接：http://blog.csdn.net/zora_lee/article/details/51635428 。

最后此篇关于Python实现购物车功能的方法分析的文章就讲到这里了,如果你想了解更多关于Python实现购物车功能的方法分析的内容请搜索CFSDN的文章或继续浏览相关文章，希望大家以后支持我的博客！ 。

26 4 0
文章推荐： python基础练习之几个简单的游戏
文章推荐： BlueHost服务器主机购买及安装WordPress的教程
文章推荐： DreamHost的Shared Hosting共享主机空间购买教程
文章推荐： Python实现的单向循环链表功能示例
qq735679552
个人简介

我是一名优秀的程序员,十分优秀！

滴滴打车优惠券免费领取
滴滴打车优惠券
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com