python中命名关键字参数的用途是什么？

# 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)