def caidan():
    total = []
    while True:
        unit= input("请输入：")
        if unit== 'q':
            break
        else:
            try:
                unit = int(unit)
            except:
                print("请输入整数!")
            else:
                total.append(unit)
    return total    
n = caidan()
print(n)

def sum(sum):
    count = 0
    for i in num:
        count=count+i
    return count
pay = sum(a)
print(pay)