python类装饰器如何使用？

class H1(object):

    def __init__(self, func):

        self.func = func

    def __call__(self, *args, **kwargs):

        return '<h1>' + self.func(*args, **kwargs) + '</h1>'

@H1

def text(name):

    return f'text {name}'

s = text('class')

print(s)