func.py

def a():
    total = []
    while True:
        unit= input("请输入：")
        if unit== 'q':
            break
        else:
            try:
                unit=int(unit)
            except:
                print('请重新输入一个数字')
            else:
                total.append(unit)
    return total
def sum(money):
    c=0
    for i in money:
        c=c+i
    return c
b=a()
pay=sum(b)
print('您一共消费'+str(pay))