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From: ram@zedat.fu-berlin.de (Stefan Ram)
Newsgroups: comp.lang.python
Subject: Re: Await expressions
Date: 1 Feb 2024 10:09:10 GMT
Organization: Stefan Ram
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ram@zedat.fu-berlin.de (Stefan Ram) writes:
>In "The Python Language Reference, Release 3.13.0a0",
>there is this section:
>|6.4 Await expression
>|Suspend the execution of coroutine on an awaitable object.
>|Can only be used inside a coroutine function.
>|await_expr ::= "await" primary

  A wording I like is what I found in the World-Wide Web where
  Victor Skvortsov wrote:

|When we await on some object, await first checks whether the
|object is a native coroutine or a generator-based coroutine,
|in which case it "yields from" the coroutine. Otherwise, it
|"yields from" the iterator returned by the object's
|__await__() method.
Victor Skvortsov (2021).

  This actually explains "to wait on some object" (which might be the
  same as to "suspend on some object"), and I was not able to find
  such an explanation in the venerable Python Language Reference!

  Heck, even of the respected members of this newsgroup, IIRC, no one
  mentioned "__await__". So, let's give a big shoutout to Victor!