yield from () Was: Re: weirdness with list()

[Alan Gauld]

On 28/02/2021 23:47, Alan Gauld via Python-list wrote:
> On 28/02/2021 00:17, Cameron Simpson wrote:
> 
>> BUT... It also has a __iter__ value, which like any Box iterates over 
>> the subboxes. For MDAT that is implemented like this:
>>
>>     def __iter__(self):
>>         yield from ()
> 
> Sorry, a bit OT but I'm curious. I haven't seen
> this before:
> 
> yield from ()
> 
> What is it doing?
> What do the () represent in this context?
> 

Thanks for the replies.
I should have known better but I was thinking some
cleverness with callables and completely forgot
the empty tuple syntax. Oops!

-- 
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
Follow my photo-blog on Flickr at:
http://www.flickr.com/photos/alangauldphotos