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