简单购物车

-*- coding: utf-8 -*-
__author__:Selid
__date__:2018/12/13

product_list=[
    (‘bick‘,2000),
    (‘book‘,100),
    (‘desk‘,500),
    (‘shooes‘,300),
    (‘traouse‘,200),
    (‘tesla‘,80000)
]
shopping_car=[]
saving=input("请输入您拥有的现金:")
while True:
    for v,i in enumerate(product_list,1):
        print (v ,i)
    choice=input("请输入商品编号[退出：q]:")
    if choice>0 and choice<=len(product_list):
        if saving>product_list[choice-1][1]:
            shopping_car.append(product_list[choice-1])
            saving-=product_list[choice-1][1]
            print saving
        else:
            print "您的余额不足，还剩%s"%saving
            print shopping_car
    elif choice==‘q‘:
        print "------已购买------"
        for i in shopping_car:
            print i
        print "您还剩%s"%saving
        break