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From: Marko Rauhamaa <marko@pacujo.net>
Newsgroups: comp.lang.python
Subject: Re: [Q] is 'yield from' syntax sugar for 'for'+'yield'?
Date: Thu, 14 Aug 2014 13:32:05 +0300
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Makoto Kuwata <kwatch@gmail.com>:

> Thank you. It seems too complicated...

I recommend you stop trying to associate the "old" yield with the "new"
yield.

Asyncio coroutines "abuse" "yield from" for a specific effect. The
classic purpose of "yield" was to spoonfeed a sequence of return values
to the caller. The coroutine meaning of "yield from" has nothing
whatsoever to do about delivering computation results; instead, it
denotes a state where a blocking operation is waited for and the control
is handed off to other activities.



Marko