human
What is a the Python code you requested given the following:
Complete the below
def mainthread(func):

    ''''Decorator that will schedule the call of the function for the next
    available frame in the mainthread. It can be useful when you use
    :class:`~kivy.network.urlrequest.UrlRequest` or when you do Thread
    programming: you cannot do any OpenGL-related work in a thread.
    Please note that this method will return directly and no result can be
    returned::
    @mainthread
    def callback(self, *args):
    print(\'The request succeeded!\',
    \'This callback is called in the main thread.\')
    self.req = UrlRequest(url=\'http://...\', on_success=callback)
    .. versionadded:: 1.8.0'
    '''
assistant
#Here is the Python code you requested.
    @wraps(func)
    def delayed_func(*args, **kwargs):
        def callback_func(dt):
            func(*args, **kwargs)
        Clock.schedule_once(callback_func, 0)
    return delayed_func