第一个python程序：Shopping List

Posted 2021-02-10 zju-missile

# This is my first program using python
# Shopping cart demo.
product_list = [
    (‘iphone‘,5800),
    (‘Mac Pro‘,9800),
    (‘Bike‘,800),
    (‘Watch‘,1800),
    (‘Coffee‘,31),
    (‘Book‘,20),
]
shopping_list=[]  # 空列表-购物清单
salary = input("Please input your total money:") # 输入购物金额
while 1-salary.isdigit():
    salary = input(‘Please input your total money in digital!:‘)
else:
    salary = int(salary) # 将购物金额转成整数数值
while True:
    print(‘--------product list-----------‘) # 每次购物输入购物清单
    for item in product_list:
        print(product_list.index(item), item)
    choice = input(‘Please select the item number.‘)
    choice = int(choice)
    if choice<len(product_list) and choice>=0:
        item = product_list[choice]
    else:
        print(‘\033[31;1mYour input is wrong !\033[0m‘)
        continue
    # 判断金额是否满足购物要求
    if salary>=item[1]:
        salary -= item[1]
        print("Add %s into the shopping cart, your balance is %s" % (item[0], salary))
        shopping_list.append(item)
    elif salary<item[1] and salary>=20:
        print("\033[31;1mYour money is not enouch for this item.\033[0m")
    else:
        print("\033[31;1mPlease get more money for shopping. Thank you !\033[0m")
        if shopping_list != []:
            print(‘----------Shopping list----------‘)
            for j in shopping_list:
                print(shopping_list.index(j), j)
        exit()
    #  询问是否还需要购物及打印购物清单
    continue_shopping = input(‘Do you want to continue shopping? (Y/N)‘)
    if continue_shopping==‘N‘:
        if shopping_list == []:
            print("\033[31;1mYou haven‘t bought anything yet.\033[0m")
        else:
            print(‘----------Shopping list--------‘)
            for j in shopping_list:
                print(shopping_list.index(j), j)
        print(‘\033[31;1mYour balance is %s.Thank your shopping.\033[0m‘ % (salary))
        exit()