[issue35619] Support custom data descriptors in pydoc

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset efcf82f94572abcdbd70336e0b2c3d0f4df280bc by Serhiy Storchaka in 
branch 'master':
bpo-35619: Improve support of custom data descriptors in help() and pydoc. 
(GH-11366)
https://github.com/python/cpython/commit/efcf82f94572abcdbd70336e0b2c3d0f4df280bc


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[issue29707] os.path.ismount() always returns false for mount --bind on same filesystem

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 32ebd8508d4807a7c85d2ed8e9c3b44ecd6de591 by Serhiy Storchaka in 
branch 'master':
bpo-29707: Document that os.path.ismount() is not able to reliable detect bind 
mounts. (GH-11238)
https://github.com/python/cpython/commit/32ebd8508d4807a7c85d2ed8e9c3b44ecd6de591


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[issue29707] os.path.ismount() always returns false for mount --bind on same filesystem

[miss-islington]

Change by miss-islington :


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[issue29707] os.path.ismount() always returns false for mount --bind on same filesystem

[miss-islington]

Change by miss-islington :


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[issue29707] os.path.ismount() always returns false for mount --bind on same filesystem

[miss-islington]

Change by miss-islington :


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[issue35619] Support custom data descriptors in pydoc

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue29707] os.path.ismount() always returns false for mount --bind on same filesystem

[miss-islington]

miss-islington  added the comment:


New changeset a4aade2cf82dfa889c2bdad9fa0aa874f43c0bf8 by Miss Islington (bot) 
in branch '3.7':
bpo-29707: Document that os.path.ismount() is not able to reliable detect bind 
mounts. (GH-11238)
https://github.com/python/cpython/commit/a4aade2cf82dfa889c2bdad9fa0aa874f43c0bf8


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[issue32146] multiprocessing freeze_support needed outside win32

[Ronald Oussoren]

Change by Ronald Oussoren :


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[issue35741] unittest.skipUnless(time._STRUCT_TM_ITEMS == 11, "needs tm_zone support") doesn't work

[jianxu3]

New submission from jianxu3 :

Whether or not the HAVE_STRUCT_TM_TM_ZONE is defined, _STRUCT_TM_ITEMS always 
equal to 11. It is initialized at PyInit_time(void).
PyModule_AddIntConstant(m, "_STRUCT_TM_ITEMS", 11);

If I modify it like this:
#ifdef HAVE_STRUCT_TM_TM_ZONE
PyModule_AddIntConstant(m, "_STRUCT_TM_ITEMS", 11)
#else
PyModule_AddIntConstant(m, "_STRUCT_TM_ITEMS", 9)
#endif

Then test_fields at test_structseq.py will fail.

def test_fields(self):
self.assertEqual(t.n_fields, time._STRUCT_TM_ITEMS)

What I hope is that if HAVE_STRUCT_TM_TM_ZONE is not defined, 
test_localtime_timezone will be skipped.

--
components: Tests
messages: 333654
nosy: jianxu3
priority: normal
severity: normal
status: open
title: unittest.skipUnless(time._STRUCT_TM_ITEMS == 11, "needs tm_zone 
support") doesn't work
type: behavior
versions: Python 3.8

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Chih-Hsuan Yen]

New submission from Chih-Hsuan Yen :

On git-master (32ebd8508d4807a7c85d2ed8e9c3b44ecd6de591) of CPython, 3 tests of 
test_builtin fails:

==
ERROR: test_envar_unimportable (test.test_builtin.TestBreakpoint) (envar='.')
--
Traceback (most recent call last):
  File "/home/yen/Projects/cpython/Lib/test/test_builtin.py", line 1618, in 
test_envar_unimportable
breakpoint()
ValueError: Empty module name

==
ERROR: test_envar_unimportable (test.test_builtin.TestBreakpoint) (envar='.foo')
--
Traceback (most recent call last):
  File "/home/yen/Projects/cpython/Lib/test/test_builtin.py", line 1618, in 
test_envar_unimportable
breakpoint()
ValueError: Empty module name

==
ERROR: test_envar_unimportable (test.test_builtin.TestBreakpoint) (envar='.int')
--
Traceback (most recent call last):
  File "/home/yen/Projects/cpython/Lib/test/test_builtin.py", line 1618, in 
test_envar_unimportable
breakpoint()
ValueError: Empty module name

--

If I revert 6fe9c446f8302553952f63fc6d96be4dfa48ceba, tests pass. This commit 
is from issue34756, so I add the author of that patch to the nosy list.

Environment: Arch Linux x86_64

Steps to reproduce:
$ ./configure
$ make
$ ./python -m test -v test_builtin

--
components: Tests
messages: 333655
nosy: serhiy.storchaka, yan12125
priority: normal
severity: normal
status: open
title: test_builtin fails after merging the fix for bpo-34756
type: behavior
versions: Python 3.8

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[issue35537] use os.posix_spawn in subprocess

[STINNER Victor]

STINNER Victor  added the comment:

> FYI, I'm researching how to use vfork(), focusing on Linux, but I'll need 
> more time to study the current state of affairs of libcs.

Using os.posix_spawn() in pure Python is a first step forward :-)


> (...) There are also additional subtle issues related to signal handling (and 
> pthread cancellation in particular) which I need to study.

That's why vfork was an opt-in option in the first glibc implementation, 
whereas glibc is now able to detect when using vfork is safe or not.


> If I find vfork()-like approach feasible, I'll open a separate issue. The 
> bonus of this approach is that it doesn't depend on a particular libc, so 
> both glibc (including older versions) and musl could be supported.

I like it, but it seems to be *very* tricky to implement!

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[issue35537] use os.posix_spawn in subprocess

[STINNER Victor]

STINNER Victor  added the comment:

If someone wants to implement a runtime check for musl, here is an heuristic 
based on ldd output and libc filenames:

https://github.com/lovell/detect-libc/blob/master/lib/detect-libc.js

var GLIBC = 'glibc';
var MUSL = 'musl';

// Try ldd
var ldd = spawnSync('ldd', ['--version'], spawnOptions);
if (ldd.status === 0 && ldd.stdout.indexOf(MUSL) !== -1) {
  family = MUSL;
  version = versionFromMuslLdd(ldd.stdout);
  method = 'ldd';
} else if (ldd.status === 1 && ldd.stderr.indexOf(MUSL) !== -1) {
  family = MUSL;
  version = versionFromMuslLdd(ldd.stderr);
  method = 'ldd';
} else {
  // Try filesystem (family only)
  var lib = safeReaddirSync('/lib');
  if (lib.some(contains('-linux-gnu'))) {
family = GLIBC;
method = 'filesystem';
  } else if (lib.some(contains('libc.musl-'))) {
family = MUSL;
method = 'filesystem';
  } else if (lib.some(contains('ld-musl-'))) {
family = MUSL;
method = 'filesystem';
  } else {
var usrSbin = safeReaddirSync('/usr/sbin');
if (usrSbin.some(contains('glibc'))) {
  family = GLIBC;
  method = 'filesystem';
}
  }
}

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[issue35633] test_eintr fails on AIX since fcntl functions were modified

[Michael Felt]

Michael Felt  added the comment:

On 07/01/2019 15:46, STINNER Victor wrote:
> STINNER Victor  added the comment:
>
> Since you are getting indentation error, I'm not sure about your test. Can 
> you please apply the patch below and run again test_eintr? Does it still fail 
> with PermissionError?
Answer - Yes. Still get PermissionError
>
> diff --git a/Lib/test/eintrdata/eintr_tester.py 
> b/Lib/test/eintrdata/eintr_tester.py
> index 25c169bde5..4db5dc9045 100644
> --- a/Lib/test/eintrdata/eintr_tester.py
> +++ b/Lib/test/eintrdata/eintr_tester.py
> @@ -492,13 +492,13 @@ class FNTLEINTRTest(EINTRBaseTest):
>  self.addCleanup(support.unlink, support.TESTFN)
>  code = '\n'.join((
>  "import fcntl, time",
> -"with open('%s', 'wb') as f:" % support.TESTFN,
> +"with open('%s', 'w+b') as f:" % support.TESTFN,
>  "   fcntl.%s(f, fcntl.LOCK_EX)" % lock_name,
>  "   time.sleep(%s)" % self.sleep_time))
>  start_time = time.monotonic()
>  proc = self.subprocess(code)
>  with kill_on_error(proc):
> -with open(support.TESTFN, 'wb') as f:
> +with open(support.TESTFN, 'w+b') as f:
>  while True:  # synchronize the subprocess
>  dt = time.monotonic() - start_time
>  if dt > 60.0:
>
> --
>
> ___
> Python tracker 
> 
> ___
>

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[issue26226] Test failures with non-ascii character in hostname on Windows

[Jack]

Jack  added the comment:

Python not working..

--
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[issue34756] Few changes in sys.breakpointhook()

[STINNER Victor]

STINNER Victor  added the comment:

I reopen the issue. This change broke test_builtin: see bpo-35742.

I can reproduce the test failure on my Fedoea 29 using:

./python -m test -v test_builtin -m TestBreakpoint

--
nosy: +vstinner
resolution: fixed -> 
status: closed -> open

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[issue35743] Broken "Exception ignored in:" message on OSError's

[Ori Avtalion]

New submission from Ori Avtalion :

When an OSError exception is raised in __del__, both Python 2 and 3 print the 
"Exception ignored" message, but Python 3 also prints a traceback.

This is similar to issue 22836, with dealt with errors in __repr__ while inside 
__del__.

Test script:

import os

class Obj(object):
def __init__(self):
self.f = open('/dev/null')
os.close(self.f.fileno())

def __del__(self):
self.f.close()

f = Obj()
del f

Output with Python 3.7.2:

Exception ignored in: 
Traceback (most recent call last):
  File "/tmp/test.py", line 9, in __del__
self.f.close()
OSError: [Errno 9] Bad file descriptor

--
components: Interpreter Core
messages: 333661
nosy: salty-horse
priority: normal
severity: normal
status: open
title: Broken "Exception ignored in:" message on OSError's
versions: Python 3.6, Python 3.7

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
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pull_requests: +11202
stage:  -> patch review

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[issue34756] Few changes in sys.breakpointhook()

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue35633] test_eintr fails on AIX since fcntl functions were modified

[STINNER Victor]

STINNER Victor  added the comment:

> On AIX the test for flock() passes, but the test for lockf() fails: (...)

I would prefer to simply skip the lockf() test rather than ignoring 
PermissionError for flock() and lockf() on all platforms. Can you please write 
a PR for that?

There is no need to add a NEWS entry, I will add "skip news". If you want to 
add a NEWS entry, mention at least the fixed test and AIX.

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
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pull_requests: +11202, 11203
stage:  -> patch review

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[issue34756] Few changes in sys.breakpointhook()

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
keywords: +patch, patch, patch, patch
pull_requests: +11202, 11203, 11204, 11205
stage:  -> patch review

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[issue27423] Failed assertions when running test.test_os on Windows

[STINNER Victor]

STINNER Victor  added the comment:

This bug has been fixed in test_os or libregrtest, I don't recall, but it's now 
fixed ;-)

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
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pull_requests: +11202, 11203, 11204
stage:  -> patch review

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[issue22836] Broken "Exception ignored in:" message on exceptions in __repr__

[Ori Avtalion]

Ori Avtalion  added the comment:

I encountered a similar bug and reported it as issue 35743.

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[issue27426] Encoding mismatch causes some tests to fail on Windows

[STINNER Victor]

STINNER Victor  added the comment:

I'm quite sure that this bug has been fixed in the meanwhile. If it still 
fails, please give more information about your configuration: ANSI code page, 
regional configuration, Windows version, etc.

--
nosy: +vstinner
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue26226] Test failures with non-ascii character in hostname on Windows

[STINNER Victor]

STINNER Victor  added the comment:

I'm not sure that all issues have been fixed, but almost all of them are. I 
prefer to close this issue which has a long history and mentions very different 
bugs. If someone wants to continue the effort for better Unicode support on 
Windows with non-ASCII hostname, please open a new specific issues.

Thanks Emanuel Barry for your bug report!

--
resolution:  -> fixed
stage: needs patch -> resolved
status: open -> closed

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[issue35738] Update timeit documentation to reflect default repeat of five

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 06f8b57212b2e2cd2e63af36cecdfa3075b324a2 by Serhiy Storchaka 
(Henry Chen) in branch 'master':
bpo-35738: Update the example for timer.Timer.repeat(). (GH-11559)
https://github.com/python/cpython/commit/06f8b57212b2e2cd2e63af36cecdfa3075b324a2


--
nosy: +serhiy.storchaka

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[issue35738] Update timeit documentation to reflect default repeat of five

[miss-islington]

Change by miss-islington :


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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Chih-Hsuan Yen]

Chih-Hsuan Yen  added the comment:

Wow that's super fast! I can confirm the patch fixes the issue on my machine. 
Thanks!

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[issue35738] Update timeit documentation to reflect default repeat of five

[miss-islington]

Change by miss-islington :


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[issue35742] test_builtin fails after merging the fix for bpo-34756

[STINNER Victor]

STINNER Victor  added the comment:

I don't understand why buildbots didn't scream and why the test didn't fail on 
Travis CI nor AppVeyor on https://github.com/python/cpython/pull/9457

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Chih-Hsuan Yen]

Chih-Hsuan Yen  added the comment:

Found a test_builtin failure in the job for the relevant commit on Travis CI - 
https://travis-ci.org/python/cpython/jobs/479642964#L1491. I guess it's not 
noticed as it's listed in allow_failures in .travis.yml. However, I'm not sure 
if it's the same issue or not as there are no failure details.

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[STINNER Victor]

STINNER Victor  added the comment:

> Found a test_builtin failure in the job for the relevant commit on Travis CI 
> - https://travis-ci.org/python/cpython/jobs/479642964#L1491.

This job is for code coverage. I confirm that failures are allowed. This job 
runs the full test suite in sequence, whereas the main Travis CI job runs tests 
in parallel... I tested running tests in sequence and in parallel: test_builtin 
fail in both cases. It's a mystery. Anyway, it's going to be fixed soon ;-)

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[issue35743] Broken "Exception ignored in:" message on OSError's

[STINNER Victor]

STINNER Victor  added the comment:

Python works as expected, I don't understand why you opened a bug report? What 
looks wrong to you?

Closing a closed file descriptor is your fault, not a bug in Python.

Python logs an error as expected.

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[issue34323] False timeout log message on proactor close

[STINNER Victor]

STINNER Victor  added the comment:


New changeset b1e45739d832e1e402a563c6727defda92e193b7 by Victor Stinner in 
branch 'master':
bpo-34323: Enhance IocpProactor.close() log (GH-11555)
https://github.com/python/cpython/commit/b1e45739d832e1e402a563c6727defda92e193b7


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

Change by STINNER Victor :


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[issue35738] Update timeit documentation to reflect default repeat of five

[miss-islington]

miss-islington  added the comment:


New changeset 0bb6b891154b5718c2d7604fc4aa7a51a2f9fe70 by Miss Islington (bot) 
in branch '3.7':
bpo-35738: Update the example for timer.Timer.repeat(). (GH-11559)
https://github.com/python/cpython/commit/0bb6b891154b5718c2d7604fc4aa7a51a2f9fe70


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

Change by STINNER Victor :


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

Change by STINNER Victor :


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[issue35738] Update timeit documentation to reflect default repeat of five

[STINNER Victor]

Change by STINNER Victor :


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

STINNER Victor  added the comment:


New changeset b91140fdb17472d03a7b7971f143c08a40fde923 by Victor Stinner in 
branch 'master':
bpo-11555: Enhance IocpProactor.close() log again (GH-11563)
https://github.com/python/cpython/commit/b91140fdb17472d03a7b7971f143c08a40fde923


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[issue35743] Broken "Exception ignored in:" message on OSError's

[Ori Avtalion]

Ori Avtalion  added the comment:

Sorry, I was confused by how Python 3 prints the traceback of ignored 
exceptions, and Python 2 does not.

(This happens on on any exception and not just OSError)

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 3607ef43c4a1a24d44f39ff54a77fc0af5bfa09a by Serhiy Storchaka in 
branch 'master':
bpo-35742: Fix test_envar_unimportable in test_builtin. (GH-11561)
https://github.com/python/cpython/commit/3607ef43c4a1a24d44f39ff54a77fc0af5bfa09a


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[issue34756] Few changes in sys.breakpointhook()

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 3607ef43c4a1a24d44f39ff54a77fc0af5bfa09a by Serhiy Storchaka in 
branch 'master':
bpo-35742: Fix test_envar_unimportable in test_builtin. (GH-11561)
https://github.com/python/cpython/commit/3607ef43c4a1a24d44f39ff54a77fc0af5bfa09a


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[issue34756] Few changes in sys.breakpointhook()

[miss-islington]

Change by miss-islington :


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[issue35743] Broken "Exception ignored in:" message on OSError's

[STINNER Victor]

STINNER Victor  added the comment:

> Sorry, I was confused by how Python 3 prints the traceback of ignored 
> exceptions, and Python 2 does not.

It's not a bug but a nice feature which helps you to debug your code!

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[issue34756] Few changes in sys.breakpointhook()

[miss-islington]

Change by miss-islington :


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[issue34756] Few changes in sys.breakpointhook()

[miss-islington]

Change by miss-islington :


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[issue34756] Few changes in sys.breakpointhook()

[miss-islington]

Change by miss-islington :


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[issue34323] False timeout log message on proactor close

[STINNER Victor]

Change by STINNER Victor :


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

Change by STINNER Victor :


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

Change by STINNER Victor :


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

Change by STINNER Victor :


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

Change by STINNER Victor :


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[issue34323] False timeout log message on proactor close

[STINNER Victor]

Change by STINNER Victor :


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[issue11555] email.Message.as_string no longer mangles "From " (doc fix)

[STINNER Victor]

STINNER Victor  added the comment:

> New changeset b91140fdb17472d03a7b7971f143c08a40fde923 by Victor Stinner in 
> branch 'master':
> bpo-11555: Enhance IocpProactor.close() log again (GH-11563)
> https://github.com/python/cpython/commit/b91140fdb17472d03a7b7971f143c08a40fde923

Sorry, this change is for bpo-34323.

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[issue34323] False timeout log message on proactor close

[STINNER Victor]

STINNER Victor  added the comment:

Oops, I used the wrong bpo number for my second change in master:

New changeset b91140fdb17472d03a7b7971f143c08a40fde923 by Victor Stinner in 
branch 'master':
bpo-11555: Enhance IocpProactor.close() log again (GH-11563)
https://github.com/python/cpython/commit/b91140fdb17472d03a7b7971f143c08a40fde923

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[miss-islington]

miss-islington  added the comment:


New changeset 97d6a56d9d169f35cf2a24d62bf15adfc42fc672 by Miss Islington (bot) 
in branch '3.7':
bpo-35742: Fix test_envar_unimportable in test_builtin. (GH-11561)
https://github.com/python/cpython/commit/97d6a56d9d169f35cf2a24d62bf15adfc42fc672


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[issue34756] Few changes in sys.breakpointhook()

[miss-islington]

miss-islington  added the comment:


New changeset 97d6a56d9d169f35cf2a24d62bf15adfc42fc672 by Miss Islington (bot) 
in branch '3.7':
bpo-35742: Fix test_envar_unimportable in test_builtin. (GH-11561)
https://github.com/python/cpython/commit/97d6a56d9d169f35cf2a24d62bf15adfc42fc672


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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

I was surprised too. Maybe it is because that was very old PR.

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[issue34756] Few changes in sys.breakpointhook()

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue35742] test_builtin fails after merging the fix for bpo-34756

[STINNER Victor]

STINNER Victor  added the comment:

> I was surprised too. Maybe it is because that was very old PR.

Yeah, that's the most likely explanation. Maybe the CI ran tests before the 
final merge, or something like that? It doesn't explain why buildbots didn't 
complain, but it doesn't matter if such hiccup is very rare ;-)

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[issue35711] Print information about an unexpectedly pending error before crashing

[STINNER Victor]

STINNER Victor  added the comment:

I close the issue, see:

https://github.com/python/cpython/pull/11513#issuecomment-454369637

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[issue35742] test_builtin fails after merging the fix for bpo-34756

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Maybe CI updates only files touched by the PR and the failed test was added 
after the initial creation of the PR? Or there is something wrong with 
timestamps, so outdated pyc files were used for tests?

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[issue34323] False timeout log message on proactor close

[STINNER Victor]

STINNER Victor  added the comment:


New changeset d5a6adf6285ec8892b977a32c22143ebd1025b50 by Victor Stinner in 
branch '3.7':
[3.7] bpo-34323: Enhance IocpProactor.close() log (GH-11565)
https://github.com/python/cpython/commit/d5a6adf6285ec8892b977a32c22143ebd1025b50


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[issue34323] False timeout log message on proactor close

[STINNER Victor]

STINNER Victor  added the comment:

Ok, the bug is now fixed. Thanks for your bug report John Nelson!

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[issue35599] asyncio windows_events.py IocpProactor bug

[STINNER Victor]

STINNER Victor  added the comment:

I confirm that it's a duplicate of bpo-34323 that I just fixed ;-)

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superseder:  -> False timeout log message on proactor close

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[issue27500] ProactorEventLoop cannot open connection to ::1

[STINNER Victor]

Change by STINNER Victor :


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[issue33837] Closing asyncio.Server on asyncio.ProactorEventLoop causes all active servers to stop listening

[STINNER Victor]

STINNER Victor  added the comment:

Duplicate of bpo-29711 and already fixed.

--
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resolution:  -> duplicate
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superseder:  -> When you use stop_serving in proactor loop it's kill all 
listening servers

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[issue32661] ProactorEventLoop locks up on close call

[STINNER Victor]

STINNER Victor  added the comment:

bug.py calls loop.run_forever() but nothing calls stops the loop. If you add 
loop.stop() to handle_incoming_connection(), the script exits properly as soon 
as a client connects and sends some data.

> 3. I press Ctrl-C in the DOS window.  Nothing happens.

This issue has been fixed by bpo-23057. So I qualify this issue as a duplicate 
of bpo-23057.

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superseder:  -> [Windows] asyncio: support signal handlers on Windows (feature 
request)

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[issue27500] ProactorEventLoop cannot open connection to ::1

[Sebastien Bourdeauducq]

Sebastien Bourdeauducq  added the comment:

Thank you!

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[issue31048] ResourceWarning in test_asyncio.test_events.ProactorEventLoopTests.test_create_server_ssl_verify_failed

[STINNER Victor]

STINNER Victor  added the comment:

I don't know how, but this issue has been fixed in the meanwhile.

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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[STINNER Victor]

Change by STINNER Victor :


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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[STINNER Victor]

Change by STINNER Victor :


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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[STINNER Victor]

Change by STINNER Victor :


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[issue35580] Windows IocpProactor: CreateIoCompletionPort 4th arg 0xffffffff -- why is this value the default?

[STINNER Victor]

STINNER Victor  added the comment:

> Am I correct that only one thread calls `GetQueuedCompletionStatus` on a 
> given `iocp` object in asyncio under Windows `IocpProactor`?

An asyncio event loop must only run in a single thread at the same time. It 
doesn't make sense to run the same event loop multiple times in parallel and it 
is not supported (most asyncio classes are not thread-safe, there is no need to 
be thread-safe).

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[issue8765] Tests unwillingly writing unicocde to raw streams

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 1462234baf7398a6b00c0f51905e26caa17d3c60 by Serhiy Storchaka in 
branch '2.7':
[2.7] bpo-8765: Deprecate writing unicode to binary streams in Py3k mode. 
(GH-11127)
https://github.com/python/cpython/commit/1462234baf7398a6b00c0f51905e26caa17d3c60


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[issue8765] Tests unwillingly writing unicocde to raw streams

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue35580] Windows IocpProactor: CreateIoCompletionPort 4th arg 0xffffffff -- why is this value the default?

[Andrew Svetlov]

Andrew Svetlov  added the comment:

>From my understanding the question is: replace 0x with 0 or 1?

I don't know much about IOCP, 0 sounds safer for me.

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[issue33944] Deprecate and remove pth files

[Nick Coghlan]

Nick Coghlan  added the comment:

`site.addsitedir` is called for every site-packages directory (whether global, 
within a venv, or at the user level), so my proposal above covers appending 
multiple segments.

Linux distros approach to handling this is terrible because they dump all their 
system packages into a single global site-packages, leading to the every 
growing sys.path problem that Barry is concerned about.

However, that's entirely the fault of distro packaging policies, and can be 
remedied in a far superior way by switching distros to a model where they 
create a venv per application, and then use .pth files to link in the system 
packages that they actually want visible to that application.

"Some users don't want to use virtual environments appropriately" is an 
incredibly poor reason for breaking a perfectly valid feature.

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[issue33944] Deprecate and remove pth files

[Nick Coghlan]

Nick Coghlan  added the comment:

Note that any PEP I contributed to writing would need to be restricted to 
eliminating arbitrary code execution, as I don't think there's anything wrong 
with the path extension feature.

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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[miss-islington]

Change by miss-islington :


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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[miss-islington]

Change by miss-islington :


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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[STINNER Victor]

STINNER Victor  added the comment:


New changeset c9f872b0bdce5888f1879fa74e098bf4a05430c5 by Victor Stinner in 
branch 'master':
bpo-23846: Fix ProactorEventLoop._write_to_self() (GH-11566)
https://github.com/python/cpython/commit/c9f872b0bdce5888f1879fa74e098bf4a05430c5


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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[miss-islington]

Change by miss-islington :


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[issue35744] Problem in the documentation of numpy.random.randint in python 2.7

[Jay]

New submission from Jay :

Official Documentation of python 2.7 mentions that numpy.random.randint(a,b) 
will return a random integer from N such that a<=N<=b. But I have run the code 
and I have found that it never returns equal to b. So, what I did was I ran 
numpy.random.randint(0,1) for 50 milion times and finally printed the sum. 

The output was 0. 

I don't know if this a documentation or an implementation issue, but this is an 
issue which needs to be looked at. I am attaching the code that I ran.

--
assignee: docs@python
components: Documentation
files: sample.py
messages: 333701
nosy: Jay, docs@python
priority: normal
severity: normal
status: open
title: Problem in the documentation of numpy.random.randint in python 2.7
type: behavior
versions: Python 2.7
Added file: https://bugs.python.org/file48051/sample.py

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[issue35744] Problem in the documentation of numpy.random.randint in python 2.7

[STINNER Victor]

STINNER Victor  added the comment:

Sorry but this is the bug tracker of Python, not of numpy. Please use 
https://github.com/numpy/numpy/issues instead.

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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[miss-islington]

miss-islington  added the comment:


New changeset c9f26714d511a338ba2fdd926e3dc62636f31815 by Miss Islington (bot) 
in branch '3.7':
bpo-23846: Fix ProactorEventLoop._write_to_self() (GH-11566)
https://github.com/python/cpython/commit/c9f26714d511a338ba2fdd926e3dc62636f31815


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[issue23846] asyncio : ProactorEventLoop raised BlockingIOError when ThreadPoolExecutor has many workers

[STINNER Victor]

STINNER Victor  added the comment:

> In any case it looks like self-pipe sock's buffer was overflown because 
> call_soon_threadsafe was called too many times, and loop._read_from_self 
> couldn't empty the buffer promptly.  Then, at some point, _write_to_self 
> failed with an IOError.

I fixed the issue. Thanks for your bug report ;-)

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[issue33944] Deprecate and remove pth files

[Jason R. Coombs]

Jason R. Coombs  added the comment:

> `site.addsitedir` is called for every site-packages directory (whether 
> global, within a venv, or at the user level), so my proposal above covers 
> appending multiple segments.

Good point. I think you're assuming that only site dirs are appropriate for 
packages that require arbitrary code execution. I think I'd like to break that 
assumption and allow any location where packages can be installed (PYTHONPATH) 
to install hooks. Consider this use-case:

draft $ mkdir pkgs  
 draft $ python3.5 
-m pip download -d pkgs future_fstrings 
 Collecting future_fstrings
  Using cached 
https://files.pythonhosted.org/packages/36/25/070c2dc1fe1e51901df5875c495d6efbbf945a93a2ca40f47e5225302fb8/future_fstrings-0.4.5-py2.py3-none-any.whl
  Saved ./pkgs/future_fstrings-0.4.5-py2.py3-none-any.whl
Collecting tokenize-rt; python_version < "3.6" (from future_fstrings)
  Using cached 
https://files.pythonhosted.org/packages/76/82/0e6a9dda45dd76be22d74211443e199a330ac7e428b8dbbc5d116651be03/tokenize_rt-2.1.0-py2.py3-none-any.whl
  Saved ./pkgs/tokenize_rt-2.1.0-py2.py3-none-any.whl
Successfully downloaded future-fstrings tokenize-rt
draft $ cat > hello-fstrings.py 
# coding: 
future_fstrings
print(f'hello world') 
draft $ 
PYTHONPATH=pkgs/future_fstrings-0.4.5-py2.py3-none-any.whl:pkgs/tokenize_rt-2.1.0-py2.py3-none-any.whl
 python3.5 hello-fstrings.py   
xonsh: subprocess mode: command not found: 
PYTHONPATH=pkgs/future_fstrings-0.4.5-py2.py3-none-any.whl:pkgs/tokenize_rt-2.1.0-py2.py3-none-any.whl
draft $ env 
PYTHONPATH=pkgs/future_fstrings-0.4.5-py2.py3-none-any.whl:pkgs/tokenize_rt-2.1.0-py2.py3-none-any.whl
 python3.5 hello-fstrings.py   
  File "hello-fstrings.py", line 1
SyntaxError: encoding problem: future_fstrings


If future-fstrings were properly installed, its runtime hook is called and the 
script can run:

draft $ python3.5 -m pip-run -q future-fstrings -- hello-fstrings.py

 
hello world


I'd like for a package like future-fstrings to be able to supply a hook that 
can be executed on startup that can be honored even if the package isn't 
installed in one of the site paths.

> Let's make a PEP.

I'd be delighted to help with the PEP.

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[issue33944] Deprecate and remove pth files

[STINNER Victor]

STINNER Victor  added the comment:

> SyntaxError: encoding problem: future_fstrings

IMHO that's the expected behavior. I would prefer to have to explicitly install 
this special encoding *before* loading a script using it.

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[issue35741] unittest.skipUnless(time._STRUCT_TM_ITEMS == 11, "needs tm_zone support") doesn't work

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan :


--
nosy: +belopolsky

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[issue35745] Add import statement in dataclass code snippet

[Windson Yang]

New submission from Windson Yang :

Most of the example in https://docs.python.org/3/library/dataclasses.html miss 
code like

from dataclasses import dataclass, field
from typing import List

I think we should add this statement in the code snippet.

--
assignee: docs@python
components: Documentation
messages: 333707
nosy: Windson Yang, docs@python
priority: normal
severity: normal
status: open
title: Add import statement in dataclass code snippet
type: enhancement
versions: Python 3.7, Python 3.8

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[issue35745] Add import statement in dataclass code snippet

[Windson Yang]

Windson Yang  added the comment:

I'm not sure if we should put 

from dataclasses import dataclass

everywhere or we should put it just in the first example as I did in the PR.

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[issue35746] TALOS-2018-0758 Denial of Service

[Cisco Talos]

New submission from Cisco Talos :

An exploitable denial-of-service vulnerability exists in the X509 certificate 
parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 
certificate can cause a NULL pointer dereference, resulting in a denial of 
service. An attacker can initiate or accept TLS connections using crafted 
certificates to trigger this vulnerability.

--
files: TALOS-2019-0758.txt
messages: 333709
nosy: Talos
priority: normal
severity: normal
status: open
title: TALOS-2018-0758 Denial of Service
type: security
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8
Added file: https://bugs.python.org/file48052/TALOS-2019-0758.txt

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[issue35746] TALOS-2018-0758 Denial of Service

[Cisco Talos]

Change by Cisco Talos :


--
versions:  -Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8
Added file: https://bugs.python.org/file48053/TALOS-2019-0758 - POC.pem

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[issue35746] TALOS-2018-0758 Denial of Service

[Christian Heimes]

Christian Heimes  added the comment:

Thanks for the report!

--
assignee:  -> christian.heimes
components: +SSL
nosy: +christian.heimes
stage:  -> needs patch
versions: +Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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[issue35746] TALOS-2018-0758 Denial of Service

[Cisco Talos]

Cisco Talos  added the comment:

Thanks for acknowledging.  We look forward to any updates/developments on the 
issue reported.

For further information about the Cisco Vendor Vulnerability Reporting and 
Disclosure Policy please refer to this document which also links to our public 
PGP key. 
https://tools.cisco.com/security/center/resources/vendor_vulnerability_policy.html

Kind Regards,

Regina Wilson
Analyst.Business Operations
regiw...@cisco.com

[cid:CFA14CB5-B7B2-4FF7-8313-22D495F607D5@vrt.sourcefire.com]

On Jan 15, 2019, at 11:30 AM, Christian Heimes 
mailto:rep...@bugs.python.org>> wrote:

Christian Heimes mailto:li...@cheimes.de>> added the comment:

Thanks for the report!

--
assignee:  -> christian.heimes
components: +SSL
nosy: +christian.heimes
stage:  -> needs patch
versions: +Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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Added file: https://bugs.python.org/file48054/image001.png

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[issue35746] TALOS-2018-0758 Denial of Service

[Christian Heimes]

Christian Heimes  added the comment:

I can confirm that CPython is affected.

By the way PyCA cryptography handles the CRL DB just fine.

>>> from cryptography import x509
>>> from cryptography.hazmat.backends import default_backend
>>> with open("Lib/test/talos-2019-0758.pem", "rb") as f:
... pem_data = f.read()
... 
>>> cert = x509.load_pem_x509_certificate(pem_data, default_backend())
>>> cert.extensions[-1]
, 
critical=False, 
value=])>)>

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