Python shopping cart user part code

知识点： 文件读，写操作，if 判断， for 循环

salary = input("输入你的工资：")
bought_list = []
product_list = {}

with open("product_list","r",encoding="utf-8") as f1:
    for item in f1:
        p_name,p_price = item.strip().split(':')
        product_list[p_name]=int(p_price)
print(product_list)

if salary.isdigit():
    salary = int(salary)
    while True:
        user_choice = input("please input product which you want:")
        if user_choice in product_list.keys():
            if product_list[user_choice] <= salary:
                bought_list.append(user_choice) #增加列表的元素
                salary = salary - product_list[user_choice]
                print("Had bought  [\033[32;1m%s\033[0m], and your balance is \033[31;1m%s\033[0m"%(user_choice,salary))
                print(bought_list)
            else:
                print("Your balance is less than product&#39;s price")
                continue
        elif user_choice is &#39;q&#39;:
            with open(&#39;bought.txt&#39;,&#39;w+&#39;,encoding=&#39;utf-8&#39;) as f2:
                for goods in bought_list:
                    print(goods,file=f2)
            exit(print("You had bought  %s goods, and your balance is %s"%(bought_list, salary)))

        else:
            print("The good had been sold out")

测试：

输入你的工资：15000
{'Python': 20, 'Iphone': 5288, 'Iwatch': 3288, 'Bike': 2400, 'Mac pro': 12888}
please input product which you want:Python
Had bought  [Python], and your balance is 14980
['Python']
please input product which you want:Bike
Had bought  [Bike], and your balance is 12580
['Python', 'Bike']
please input product which you want:Mac pro
Your balance is less than product's price
please input product which you want:Iwatch
Had bought  [Iwatch], and your balance is 9292
['Python', 'Bike', 'Iwatch']
please input product which you want:q
You had bought  ['Python', 'Bike', 'Iwatch'] goods, and your balance is 9292

The above is the detailed content of Python shopping cart user part code. For more information, please follow other related articles on the PHP Chinese website!