func.py

def x():
    total = []
    while True:
        unit= input("请输入：")
        if unit== 'q':
            break
        else:
            try:
                unit=int(unit)
            except:
                print("请输入数字")
            else:
                total.append(unit)      
    return total

def sum(m):
    num=0
    for i in m:
        num=num+i
    return num
a=x()
b=sum(a)
print("共消费"+str(b)+"元")