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  • Python 购物车----之用户部分

    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  [33[32;1m%s33[0m], and your balance is 33[31;1m%s33[0m"%(user_choice,salary))
                    print(bought_list)
                else:
                    print("Your balance is less than product's price")
                    continue
            elif user_choice is 'q':
                with open('bought.txt','w+',encoding='utf-8') 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")
    View Code

    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
    View Code
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  • 原文地址:https://www.cnblogs.com/frankb/p/6271070.html
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