On 01/03/2021 00:47, 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?
The 0-tuple ;)
yield from x
is syntactic sugar for
for item in x:
yield item
Instead of () you can use any empty iterable.
If x is empty nothing is ever yielded.
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