* Add a new asyncio.subprocess module
* Add new create_subprocess_exec() and create_subprocess_shell() functions
* The new asyncio.subprocess.SubprocessStreamProtocol creates stream readers
for stdout and stderr and a stream writer for stdin.
* The new asyncio.subprocess.Process class offers an API close to the
subprocess.Popen class:
- pid, returncode, stdin, stdout and stderr attributes
- communicate(), wait(), send_signal(), terminate() and kill() methods
* Remove STDIN (0), STDOUT (1) and STDERR (2) constants from base_subprocess
and unix_events, to not be confused with the symbols with the same name of
subprocess and asyncio.subprocess modules
* _ProactorBasePipeTransport.get_write_buffer_size() now counts also the size
of the pending write
* _ProactorBaseWritePipeTransport._loop_writing() may now pause the protocol if
the write buffer size is greater than the high water mark (64 KB by default)
I picked the value from the error message:
======================================================================
FAIL: test_ucs2_string (test.test_hash.StrHashRandomizationTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/cpython/buildslave/cc-64/3.x.snakebite-sol10-sparc-cc-64/build/Lib/test/test_hash.py", line 292, in test_ucs2_string
self.assertEqual(self.get_hash(self.repr_ucs2, seed=42), h)
AssertionError: -3927695501187247084 != None
platforms. Bug seen on 64-bit Linux when using "make profile-opt".
Only align the "frame_t" structure on 32-bit when Visual Studio is used. Before
the alignment to 32-bit was applied to the whole file any compiler supporting
"#pragma pack(4)" which includes GCC.
Windows) instead of using the "duplex" pipe transport. The new class uses a
simpler overlapped read to be notified when the pipe is closed. So the protocol
doesn't need to implement eof_received(): connection_lost() is called instead.
_UnixWritePipeTransport has the same approach.
instead of rounding towards zero, in select and selectors modules:
select.epoll.poll(), selectors.PollSelector.poll() and
selectors.EpollSelector.poll(). For example, a timeout of one microsecond
(1e-6) is now rounded to one millisecondi (1e-3), instead of being rounded to
zero.
Mention the change in Misc/NEWS.
Yury Selivanov
R David Murray
Victor Stinner
Terry Jan Reedy
Ezio Melotti
Larry Hastings
Brian Quinlan
Zachary Ware
Andrew Kuchling
Brett Cannon