def wang():
    total = []
    while True:
        unit= input("请输入(q退出)")
        if unit== 'q':
            break
        else:
            try:
                unit=int(unit)
            except:
                print("重新输入一个数字")
            else:
                total.append(unit)
            print("*"*90)
    return total
def sum(money):
    count=0
    for i in money:
        count=count+i
    return count
price=wang()
pay=sum(price)
print("您一共花了"+str(pay)+"元,扫码还是现金?")