python命名关键字参数有什么用？

# 命名关键字参数

def print_info4(name, age=18, height=178, *, weight, **kwargs):

    '''

    打印信息函数4，加入命名关键字参数

    :param name:

    :param age:

    :param height:

    :param weight:

    :param kwargs:

    :return:

    '''

    print('name: ', name)

    print('age: ', age)

    print('height: ', height)

    print('keyword: ', kwargs)

    print('weight: ', weight)

print_info4('robin', 20, 180, birth='2000/02/02', weight=125)