func.py

def a():
    total = []
    while True:
        unit= input("请输入(q退出)：")
        if unit== 'q':
            break
        else:
            try:
                unit = int(unit)
            except:
                print("请重新输入一个数字")
            else:
                total.append(unit)    
            finally:
                print("-"*30)
    return total
    print(total)
 
 
result=a()
print(result)
def sum(unit):
    count=0
    for i in unit:
        count=count+i
    return count

price = a()
pay=sum(price)
#print("您一共消费了"+str(pay)+"元！扫码还是现金呢？")