def input_age():
    while True:
        try:
            age = int(input('请输入年龄'))
            break
        except ValueError :
            print('输入年龄格式有误请重新输入')
    yield age
    return input_age()


list_age = []
def input_list_age():
    print('1.录入年龄\n2.返回')
    while True:
        try:
            n = int(input('请输入'))
            if n == 1:
                list_age.append(next(input_age()))
                print('1.继续录入年龄\n2.返回')
            elif n == 2:
                break
            else:
                print('输入错误，重新输入')
                print('1.录入年龄\n2.返回')
        except:
            print('输入错误，重新输入')
            print('1.录入年龄\n2.返回')