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126 Commits

Author SHA1 Message Date
Rémi Lapeyre 004e64e805
bpo-40967: Remove deprecated asyncio.Task.current_task() and asyncio.Task.all_tasks() (GH-20874) 2020-07-01 20:41:21 -07:00
Kyle Stanley 2b201369b4
Fix asyncio.to_thread() documented return type (GH-20547) 
When I wrote the documentation for `asyncio.to_thread()`, I mistakenly assumed that `return await loop.run_in_executor(...)` within an async def function would return a Future. In reality, it returns a coroutine.

This likely won't affect typical usage of `asyncio.to_thread()`, but it's important for the documentation to be correct here. In general, we also tend to avoid returning futures from high-level APIs in asyncio.
 2020-05-31 00:07:04 -07:00
Bar Harel 13206b52d1
bpo-40405: Fix asyncio.as_completed docs (GH-19753) 
* Fix as_completed docs to correctly state the function return value.
* Also, improves the general wording of the as_completed documentation.

Co-Authored-By: Rémi Lapeyre <remi.lapeyre@henki.fr>
Co-Authored-By: Kyle Stanley <aeros167@gmail.com>
Co-Authored-By: Yury Selivanov <yury@edgedb.com>
 2020-05-23 19:14:31 -04:00
Kyle Stanley 0f56263e62
bpo-32309: Add support for contextvars in asyncio.to_thread() (GH-20278) 
Allows contextvars from the main thread to be accessed in the separate thread used in `asyncio.to_thread()`. See the [discussion](https://github.com/python/cpython/pull/20143#discussion_r427808225) in GH-20143 for context.

Automerge-Triggered-By: @aeros
 2020-05-20 22:20:43 -07:00
Kyle Stanley cc2bbc2227
bpo-32309: Implement asyncio.to_thread() (GH-20143) 
Implements `asyncio.to_thread`, a coroutine for asynchronously running IO-bound functions in a separate thread without blocking the event loop. See the discussion starting from [here](https://github.com/python/cpython/pull/18410#issuecomment-628930973) in GH-18410 for context.

Automerge-Triggered-By: @aeros
 2020-05-18 20:03:28 -07:00
Chris Jerdonek 1ce5841eca
bpo-31033: Add a msg argument to Future.cancel() and Task.cancel() (GH-19979) 2020-05-15 16:55:50 -07:00
romasku 382a5635bd
bpo-40607: Reraise exception during task cancelation in asyncio.wait_for() (GH-20054) 
Currently, if asyncio.wait_for() timeout expires, it cancels
inner future and then always raises TimeoutError. In case
those future is task, it can handle cancelation mannually,
and those process can lead to some other exception. Current
implementation silently loses thoses exception.

To resolve this, wait_for will check was the cancelation
successfull or not. In case there was exception, wait_for
will reraise it.

Co-authored-by: Roman Skurikhin <roman.skurikhin@cruxlab.com>
 2020-05-15 13:12:05 -07:00
jack1142 de92769d47
bpo-34790: add version of removal of explicit passing of coros to `asyncio.wait`'s documentation (#20008) 2020-05-13 11:55:12 -07:00
Joel Rosdahl 9d74658f0a
bpo-40499: Mention that asyncio.wait() needs a non-empty aws set (GH-19900) 
A similar formulation was added in bpo-21596
(db74d982d4) but was lost in bpo-33649
(3faaa8857a).
 2020-05-04 14:56:00 -07:00
Kyle Stanley f900064ac4 docs: Add asyncio source code links (GH-16640) 2019-10-10 19:18:46 -04:00
Kyle Stanley e407013089 Fix and improve `asyncio.run()` docs (GH-16403) 2019-09-30 17:12:21 -07:00
Emmanuel Arias 17deb16883 bpo-38260: Add Docs on asyncio.run (GH-16337) 
Add docs about return and raise exception on asyncio.run





https://bugs.python.org/issue38260



Automerge-Triggered-By: @asvetlov
 2019-09-25 01:53:49 -07:00
Kyle Stanley 77af2290e5 Doc: Remove provisional note for asyncio.run() (GH-16310) 
Based on a comment from @asvetlov https://github.com/python/cpython/pull/15735#discussion_r323619076, this removes the provisional note for ``asyncio.run()`` in the documentation.

Automerge-Triggered-By: @1st1
 2019-09-20 16:46:21 -07:00
Kyle Stanley 9fdc64cf12 bpo-34037: Fix test_asyncio failure and add loop.shutdown_default_executor() (GH-15735) 2019-09-19 15:47:22 +03:00
Andrew Svetlov a488879cba
bpo-36373: Deprecate explicit loop in task and subprocess API (GH-16033) 2019-09-12 15:40:40 +03:00
Alex Grönholm 98ef92002e bpo-36999: Add asyncio.Task.get_coro() (GH-13680) 
https://bugs.python.org/issue36999
 2019-05-30 08:30:09 -07:00
Matthias Bussonnier d0ebf13e50 bpo-36932: use proper deprecation-removed directive (GH-13349) 
.. And update some deprecation warnings with version numbers.




https://bugs.python.org/issue36932
 2019-05-20 23:20:10 -07:00
Boštjan Mejak 1d5bdef550 Orthographical fix (GH-13418) 
Add a missing comma.
 2019-05-19 02:01:36 -07:00
Andrew Svetlov 68b34a7204 bpo-36921: Deprecate @coroutine for sake of async def (GH-13346) 
The second attempt. Now deprecate `@coroutine` only, keep `yield from fut` as is.


https://bugs.python.org/issue36921
 2019-05-16 07:52:10 -07:00
Vaibhav Gupta 3a81076bbf bpo-35579: Fix typo in in asyncio-task documentation (GH-11321) 
https://bugs.python.org/issue35579


https://bugs.python.org/issue35579
 2018-12-26 06:47:16 -08:00
Mariatta 9f43fbbd9d Use f-strings in asyncio-task code examples (GH-10035) 
Replace str.format with f-strings in the code examples of asyncio-task documentation.
 2018-10-25 00:37:12 +02:00
Hrvoje Nikšić cd602b8af2 bpo-34476: Document that asyncio.sleep() always suspends. (#9643) 2018-10-01 13:09:38 +03:00
Yury Selivanov 59ee5b1293
bpo-34802: Fix asyncio.iscoroutine() docs (GH-9611) 2018-09-27 15:48:30 -04:00
Yury Selivanov fad6af2744
asyncio/docs: Replace Python 4.0 -> 3.10 (GH-9579) 2018-09-25 17:44:52 -04:00
Yury Selivanov 996859a90d
bpo-34790: [docs] Passing coroutines to asyncio.wait() can be confusing. (GH-9543) 2018-09-25 14:51:21 -04:00
Yury Selivanov db1a80e97a
bpo-33649: Fix gather() docs; fix title; few other nits. (GH-9475) 2018-09-21 16:23:15 -04:00
Yury Selivanov e247b46cba
bpo-33649: More improvements (GH-9439) 2018-09-20 12:43:59 -04:00
Yury Selivanov 471503954a
bpo-33649: Add a high-level section about Futures; few quick fixes (GH-9403) 
Co-authored-by: Elvis Pranskevichus <elvis@magic.io>
 2018-09-18 17:55:44 -04:00
Yury Selivanov b042cf10c6
bpo-33649: Fix markup; add another note that asyncio.run is 3.7+ (GH-9389) 2018-09-18 02:47:54 -04:00
Miguel Ángel García 9c53fa6ad9 Fix syntax error on Asyncio example in doc (GH-9387) 
The `gather` method requires to close the parenthesis, but it is being closed twice.
 2018-09-18 02:01:26 -04:00
Danny Hermes 7bfbda46f4 Change "set_after" reference to `say_after`. (GH-9384) 2018-09-18 00:49:21 -04:00
Elvis Pranskevichus 1fa2ec49be bpo-33649: A copy-editing pass on asyncio documentation (GH-9376) 2018-09-17 19:16:44 -04:00
Yury Selivanov 394374e30c
bpo-33649: Add low-level APIs index. (GH-9364) 2018-09-17 15:35:24 -04:00
Yury Selivanov 7372c3bbef
bpo-33649: Add high-level APIs cheat-sheet (GH-9319) 2018-09-14 15:11:24 -07:00
Yury Selivanov 3faaa8857a bpo-33649: Refresh Tasks and Futures pages (#9314) 
* bpo-33649: Refresh Tasks and Futures pages

* Fixes

* Fix markup
 2018-09-14 13:32:07 -07:00
Yury Selivanov 7c7605ff11
bpo-33649: First asyncio docs improvement pass (GH-9142) 
Rewritten/updated sections:

* Event Loop APIs
* Transports & Protocols
* Streams
* Exceptions
* Policies
* Queues
* Subprocesses
* Platforms
 2018-09-11 09:54:40 -07:00
Alex Grönholm cca4eec3c0 bpo-34270: Make it possible to name asyncio tasks (GH-8547) 
Co-authored-by: Antti Haapala <antti.haapala@anttipatterns.com>
 2018-08-08 17:06:47 -04:00
Elvis Pranskevichus dec947ca26 Fix typo introduced in GH-7217 (#7230) 2018-05-29 20:14:59 -04:00
Elvis Pranskevichus f9aeca2085 bpo-23859: Document that asyncio.wait() does not cancel its futures (#7217) 
Unlike `asyncio.wait_for()`, `asyncio.wait()` does not cancel the passed
futures when a timeout accurs.
 2018-05-29 18:21:44 -04:00
Elvis Pranskevichus e2b340ab41 bpo-32751: Wait for task cancellation in asyncio.wait_for() (GH-7216) 
Currently, asyncio.wait_for(fut), upon reaching the timeout deadline,
cancels the future and returns immediately.  This is problematic for
when *fut* is a Task, because it will be left running for an arbitrary
amount of time.  This behavior is iself surprising and may lead to
related bugs such as the one described in bpo-33638:

    condition = asyncio.Condition()
    async with condition:
        await asyncio.wait_for(condition.wait(), timeout=0.5)

Currently, instead of raising a TimeoutError, the above code will fail
with `RuntimeError: cannot wait on un-acquired lock`, because
`__aexit__` is reached _before_ `condition.wait()` finishes its
cancellation and re-acquires the condition lock.

To resolve this, make `wait_for` await for the task cancellation.
The tradeoff here is that the `timeout` promise may be broken if the
task decides to handle its cancellation in a slow way.  This represents
a behavior change and should probably not be back-patched to 3.6 and
earlier.
 2018-05-29 17:31:01 -04:00
Yury Selivanov 863b674909
bpo-32684: Fix gather to propagate cancel of itself with return_exceptions (GH-7209) 2018-05-29 17:20:02 -04:00
Yury Selivanov 416c1ebd98
bpo-32610: Fix asyncio.all_tasks() to return only pending tasks. (GH-7174) 2018-05-28 17:54:02 -04:00
Yury Selivanov 28b9178023
bpo-32436: Document PEP 567 changes to asyncio. (GH-7073) 2018-05-23 13:35:04 -04:00
Elvis Pranskevichus 63536bd286 bpo-32996: The bulk of What's New in Python 3.7 (GH-6978) 2018-05-19 23:15:06 -04:00
Yury Selivanov d8d715f514
asyncio/docs: Mark asyncio.run() as provisional in 3.7. (#6946) 2018-05-17 13:44:00 -04:00
Andrew Svetlov b21505e710
Fix docs markup for asyncio current_task() and all_tasks() (#6089) 2018-03-12 20:50:50 +02:00
Joongi Kim 13cfd57dcf Fix missing coroutine declaration in the asyncio documentation. (#5964) 2018-03-03 18:43:54 +02:00
Yury Selivanov ca9b36cd1a
bpo-32415: Add asyncio.Task.get_loop() and Future.get_loop() (#4992) 2017-12-23 15:04:15 -05:00
Andrew Svetlov 44d1a5912e
bpo-32250: Implement asyncio.current_task() and asyncio.all_tasks() (#4799) 2017-12-16 21:58:38 +02:00
Andrew Svetlov f74ef458ab
bpo-32311: Implement asyncio.create_task() shortcut (#4848) 
* Implement functionality
* Add documentation
 2017-12-15 07:04:38 +02:00