Python学习笔记016

购物车

 

# __author:XY
# date: 2020/3/4

product=[
    ('Macbook',9000),
    ('iphone',5000),
    ('ipad',3500),
    ('mini',2000),
    ('ipod',1500),
    ('airpods',1000),
    ('apple pencil', 700),
    ('shuffle',500),
    ('earpods',200),
]
salary=input('Please input your salary:')
cart=[]
msg_wrong='Wong input! Please input the correct number or letter!'

if salary.isdigit():
    salary=int(salary)
    while True:
        print('----Shopping Menu------')
        for i, p in enumerate(product,1):
            print(i,p)
        print('----Welcome------')
        print('Please input the Number(q=quit):')
        choice=input('>>>:')
        if choice.isdigit():
            choice=int(choice)
            if 0<choice<=len(product):
                item=product[choice-1]
                if salary<item[1]:
                    print('Not enough money!')
                else:
                    salary-=item[1]
                    cart.append(item)
                    print(item,'is in your shopping cart! you have %s yuan left'%salary)
            else:
                print(msg_wrong)
        elif choice=='q':
            print('Here are the items you have purchased!')
            for x in cart:
                print(x)
            print('Your have %s yuan left'%salary)
            print('bye-bye')
            break
        else:
            print(msg_wrong)
else:
    print(msg_wrong)