diy.py

def new_input():
    total = []
    while True:
        money = input('请输入（q退出）：')
        if money == 'q':
            break
        else:
            try:
                money = int(money)
            except:
                print("请重新输入一个数字")
            else:
                total.append(money)
    return total

def sum(money):
    count = 0
    for i in money:
        count += i
    return count
#result = new_input()
#pay = sum(result)
#print("您一共花费了"+str(pay)+"元钱！")