delta/cpython-git.git, branch v3.7.0b5

3.7.0b5

2018-05-30T23:50:49+00:00

bpo-31368: Enhance os.preadv() documentation (GH-7254)

2018-05-30T23:22:13+00:00

(cherry picked from commit 02e2a085dc1740b1cbf4ba2ed77335c84ce8a367)

Co-authored-by: Pablo Galindo

3.6 what's new: fix a reference to PEP 528 (GH-7113) (#7256)

2018-05-30T23:09:00+00:00

(cherry picked from commit 495e567a2b3bbe3b99f0c253edf12997a9ff4ee1)

Co-authored-by: Dmitry Shachnev

bpo-33696: Install python-docs-theme even if SPHINXBUILD is defined (GH-7242)

2018-05-30T17:32:33+00:00

(cherry picked from commit 05f1c8902c78dce66aed067444e2b973221bae2b)

Co-authored-by: Andrés Delfino

Improve ensurepip's --help (GH-4686) (GH-7238)

2018-05-30T08:34:32+00:00

* Add a space to ensurepip's --altinstall option
* Add periods to the arguments of ensurepip that didn't have it

This makes --help for all optional arguments consistent and also makes it
consistent with pip --help.
(cherry picked from commit e9537ad6a128924dd610bea2268065500c174181)

Co-authored-by: Wieland Hoffmann

[3.7] bpo-23859: Document that asyncio.wait() does not cancel its futures (GH-7217) (#7227)

2018-05-30T01:26:22+00:00

* bpo-23859: Document that asyncio.wait() does not cancel its futures (GH-7217)

Unlike `asyncio.wait_for()`, `asyncio.wait()` does not cancel the passed
futures when a timeout accurs.
(cherry picked from commit f9aeca2085464838f04bf13f816a1f861d43541f)

Co-authored-by: Elvis Pranskevichus 

* Update asyncio-task.rst

Revert "bpo-22087: Fix Policy.get_event_loop() to detect fork (GH-7208)" (GH-7233)

2018-05-30T00:56:33+00:00

This reverts commit 2a7eb0b531656f4a77d85078e6e009e4b3639ef9.

bpo-32684: Fix nits in tests (GH-7225) (#7231)

2018-05-30T00:40:54+00:00

(cherry picked from commit 6f75bae74866b6acf638e3aa610d830d55b7e314)

Co-authored-by: Yury Selivanov

[3.7] bpo-31639: Change ThreadedHTTPServer to ThreadingHTTPServer class name (GH-7195) (GH-7219)

2018-05-30T00:24:17+00:00

* [3.7] bpo-31639: Change ThreadedHTTPServer to ThreadingHTTPServer class name (GH-7195).
(cherry picked from commit 1cee216cf383eade641aed22f4ec7d4cb565ecff)

* Fix whatsnew entry about ThreadedHTTPServer. (GH-7220)
(cherry picked from commit a34e424bdbc62b4d83593af1c0d459d8aaac90f3)

bpo-32751: Wait for task cancellation in asyncio.wait_for() (GH-7216)

2018-05-29T22:37:06+00:00

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.
(cherry picked from commit e2b340ab4196e1beb902327f503574b5d7369185)

Co-authored-by: Elvis Pranskevichus