func.py

def new_input():
    total = []
    while True:
        unit= input("请输入：")
        if unit== 'q':
            break
        else:
            try:
                unit=int(unit)
            except:
                print('重新输入整数')
            else:
                total.append(unit)
            finally:
                print('-'*30)
    return total
def sum(unit):
    count=0
    for i in unit:
        count=count+i
    return count
price=new_input()
pay=sum(price)
print('您一共消费了'+str(pay)+'元，扫码还是现金？')