購物車程序實現

原創

yhf1995

2020-02-21 03:33

題目來源：老男孩教育Python視頻

#  -*- coding: utf-8 -*-
"""
@Author:yhf1995
@time:2020/1/30 8:24
"""
salary = input("Please input your money number:")
product_list =[
    ("Apple watch", 4500),
    ("milk", 60),
    ("bike", 1000),
    ("Starbucks", 40),
    ("book",80)
]
shopping_list = []
if salary.isdigit():
    salary = int(salary)
# 判斷輸入的金額是否爲數字，如果是將其轉爲int類型，如果不是，輸出 輸入有誤
    while True:
        for item in product_list:
            print(product_list.index(item),item)
            # 打印商品列表
        choice_number = input("Please enter the number of the product you want:>>>")
        if choice_number.isdigit():
            choice_number = int (choice_number)
            # 判斷輸入的商品編號是否爲數字，如果是轉爲int型，如果不是，提示輸入有誤
            if choice_number < len(product_list) and choice_number >= 0:
                # 判斷商品是否存在
                if salary >= product_list[choice_number][1]:
                    shopping_list.append(product_list[choice_number])
                    salary -= product_list[choice_number][1]
                    print("add shop %s in your shopping cart,and your salary is \033[31;1m%s\033[0m!"%(product_list[choice_number],salary))
                    # 判斷餘額是否足夠，餘額足夠，將商品放入購物車，餘額減去該商品價格，輸出放入購物車的商品和餘額
                else:
                    print("You have insufficient balance!")
                    # 餘額不足
            else:
                print("product_number does not exist!")
                # 商品不存在
        elif choice_number == "Q":
            print("The shopping cart list is as follows:")
            for shop_item in shopping_list:
                print(shop_item)
            print("Your current balance is %s."%(salary))
            exit()
            # 輸入Q 打印購物車商品和餘額,並退出購物車程序
        else:
            print("The product_number is error!")
            # 商品編號有誤
else:
    print("The amount entered is not a number!")
    # 金額有誤

這是學習老男孩教育Python課程的一個記錄，我覺得該課程講的挺好的。可參考金角大王Python之路02。