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[Python-Dev] PEP 0492 __aenter__ & __aexit__

Daniel Miller dalanmiller at rethinkdb.com
Sun Feb 7 11:16:41 EST 2016 
Awesome, I missed that. Thank you Brett.

Am I understanding correctly that if I'd like to avoid `async with await
EXPR` whatever is returned from EXPR must implement `__await__` as a
non-coroutine method? Which then I'd just be able to use `async with ...`?



2016-02-06 16:05 GMT-06:00 Brett Cannon <brett at python.org>:

>
>
> On Sat, 6 Feb 2016 at 13:50 Daniel Miller <dalanmiller at rethinkdb.com>
> wrote:
>
>> Hi Python-Dev Group,
>>
>> I am trying to implement __aenter__ and __aexit__ for the RethinkDB
>> <https://rethinkdb.com> Python driver. Looking at the PEP I don't see
>> any definitions as to what the expected parameters that __exit__ are
>> supposed to take and couldn't find any other similar implementations. Is
>> there a piece of documentation I should be looking at that I'm missing?
>>
>>
>> https://www.python.org/dev/peps/pep-0492/#asynchronous-context-managers-and-async-with
>>
>
> The arguments to __aexit__ are the same as __exit__ in a normal context
> manager. See
> https://docs.python.org/3.5/reference/datamodel.html#object.__aexit__ for
> the official docs for __aexit__.
>
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