[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

STINNER Victor  added the comment:

The race condition still exists in tests. Recent failure on AMD64 Windows8.1 
Refleaks 3.x:
https://buildbot.python.org/all/#/builders/511/builds/249

0:03:31 load avg: 2.93 [ 42/432/1] test_threading failed (1 error) (1 min 12 
sec) -- running: test_runpy (1 min 8 sec), test_pydoc (55.4 sec), test_io (1 
min 29 sec)
beginning 6 repetitions
123456
...Warning -- Unraisable exceptionWarning -- Unraisable exceptionWarning -- 
Unraisable exception
Exception ignored in thread started by: 
.task at 0x00CA51433CD0>
Exception ignored in thread started by
Exception ignored in thread started by: Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 49, in task
.task at 0x00CA51433CD0>: 
.task at 0x00CA51433CD0>
Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 49, in task
Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 49, in task
f()f()

f()  
   ^  ^

   File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 1021, in f
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 1021, in f
^^^
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 1021, in f
i = barrier.wait()i = barrier.wait()

 i = barrier.wait()  
 ^ ^^^ ^^ ^^^ ^^
^^  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 683, in wait

  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 683, in wait
^
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 683, in wait
self._wait(timeout)
^self._wait(timeout)^
^self._wait(timeout)
 ^^ ^   ^  ^^ ^
^^  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 723, in _wait
^^
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 723, in _wait
^^raise BrokenBarrierError^

 raise BrokenBarrierError  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", line 723, 
in _wait
   ^
^ ^ ^ ^ ^^^^^raise BrokenBarrierError^^
^^ ^^ ^^ ^^ 
^^threading.^^BrokenBarrierError^^: ^^^
^
^threading.BrokenBarrierError^: ^
^^^
threading.BrokenBarrierError: 
Warning -- Unraisable exception
Exception ignored in thread started by: .task 
at 0x00CA51433CD0>
Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 49, in task
f()
^^^
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 1021, in f
i = barrier.wait()
^^
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 674, in wait
self._enter() # Block while the barrier drains.
^
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 698, in _enter
raise BrokenBarrierError

threading.BrokenBarrierError: 
test test_threading failed -- Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 1026, in test_default_timeout
self.run_threads(f)
^^^
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 855, in run_threads
f()
^^^
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\test\lock_tests.py", 
line 1021, in f
i = barrier.wait()
^^
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 683, in wait
self._wait(timeout)
^^^
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\Lib\threading.py", 
line 721, in _wait
raise BrokenBarrierError

threading.BrokenBarrierError

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

Change by STINNER Victor :


--
status: closed -> open

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

STINNER Victor  added the comment:

10 years ago, the issue is not solved. Recent failure on AMD64 Windows8.1 
Refleaks PR buildbot:
https://buildbot.python.org/all/#/builders/470/builds/45

The issue started to make the buildbot fail since I added a 
threading.excepthook in libregrtest.

0:58:59 load avg: 4.46 [107/427/2] test_threading failed (1 min 21 sec) -- 
running: test_bufio (9 min 53 sec), test_asyncio (5 min 29 sec), 
test_compileall (19 min 3 sec)
beginning 6 repetitions
123456
..Warning -- Unraisable exception
Exception ignored in thread started by: .task 
at 0x00F31C974050>
Traceback (most recent call last):
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 48, in task
f()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 998, in f
i = barrier.wait()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 661, in wait
self._wait(timeout)
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 701, in _wait
raise BrokenBarrierError
threading.BrokenBarrierError: 
Warning -- Unraisable exception
Exception ignored in thread started by: .task 
at 0x00F31C974050>
Traceback (most recent call last):
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 48, in task
f()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 998, in f
i = barrier.wait()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 661, in wait
self._wait(timeout)
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 701, in _wait
raise BrokenBarrierError
threading.BrokenBarrierError: 
Warning -- Unraisable exception
Exception ignored in thread started by: .task 
at 0x00F31C974050>
Traceback (most recent call last):
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 48, in task
f()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 998, in f
i = barrier.wait()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 652, in wait
self._enter() # Block while the barrier drains.
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 676, in _enter
raise BrokenBarrierError
threading.BrokenBarrierError: 
Warning -- Unraisable exception
Exception ignored in thread started by: .task 
at 0x00F31C974050>
Traceback (most recent call last):
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 48, in task
f()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 998, in f
i = barrier.wait()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 652, in wait
self._enter() # Block while the barrier drains.
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 676, in _enter
raise BrokenBarrierError
threading.BrokenBarrierError: 
test test_threading failed -- Traceback (most recent call last):
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 1003, in test_default_timeout
self.run_threads(f)
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 832, in run_threads
f()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\test\lock_tests.py",
 line 998, in f
i = barrier.wait()
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 661, in wait
self._wait(timeout)
  File 
"D:\buildarea\pull_request.ware-win81-release.refleak\build\lib\threading.py", 
line 699, in _wait
raise BrokenBarrierError
threading.BrokenBarrierError

--
resolution: out of date -> 

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

STINNER Victor  added the comment:

I didn't see this failure recently, I close the issue.

--
resolution:  -> out of date
status: open -> closed

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

STINNER Victor  added the comment:

test_threading failed on AMD64 Windows8.1 Refleaks 3.x, the unittest errors are 
missing, but unraisable exceptions look similar:
https://buildbot.python.org/all/#/builders/80/builds/646

0:21:11 load avg: 7.30 [156/419/3] test_threading failed (2 min 56 sec) -- 
running: test_concurrent_futures (7 min 40 sec), test_email (1 min 34 sec)
beginning 6 repetitions
123456
.Warning -- Unraisable exceptionWarning -- Unraisable exception

Exception ignored in thread started byException ignored in thread started by: : 
.task at 0x00C7CAC57AF0>.task at 0x00C7CAC57AF0>

Traceback (most recent call last):
Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 41, in task
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 41, in task
f()
f()  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 939, in f

  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 939, in f
i = barrier.wait()
i = barrier.wait()  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", line 620, 
in wait

  File "D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", 
line 620, in wait
self._wait(timeout)
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", line 660, 
in _wait
self._wait(timeout)
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", 
line 660, in _wait
raise BrokenBarrierError
threading.BrokenBarrierErrorraise BrokenBarrierError: 

threading.BrokenBarrierError: 
Warning -- Unraisable exception
Exception ignored in thread started by: .task 
at 0x00C7CAC57AF0>
Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 41, in task
f()
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 939, in f
i = barrier.wait()
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", 
line 611, in wait
self._enter() # Block while the barrier drains.
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", 
line 635, in _enter
raise BrokenBarrierError
threading.BrokenBarrierError: 
Warning -- Unraisable exception
Exception ignored in thread started by: .task 
at 0x00C7CAC57AF0>
Traceback (most recent call last):
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 41, in task
f()
  File 
"D:\buildarea\3.x.ware-win81-release.refleak\build\lib\test\lock_tests.py", 
line 939, in f
i = barrier.wait()
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", 
line 611, in wait
self._enter() # Block while the barrier drains.
  File "D:\buildarea\3.x.ware-win81-release.refleak\build\lib\threading.py", 
line 635, in _enter
raise BrokenBarrierError
threading.BrokenBarrierError: 
test test_threading failed -- multiple errors occurred; run in verbose mode for 
details

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[Ivan Pozdeev]

Ivan Pozdeev  added the comment:

Got this issue today in AppVeyor's PR check: 
https://ci.appveyor.com/project/python/cpython/builds/24945165, so it's not 
local to David's worker.
(At rerun, the test succeeeded, so the check status was not affected.)

--
nosy: +Ivan.Pozdeev
versions: +Python 3.7, Python 3.8, Python 3.9 -Python 3.2, Python 3.3

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[David Bolen]

David Bolen  added the comment:

I should mention that a high level of test parallelism on the part of my worker 
might have be a contributing factor in this most recent case.

The worker was recently upgraded to a faster 4-core VM, but with limited I/O.  
In a test run the test processes invariably end up stuck on I/O heavy tests, 
idling the CPUs.

So I've been running the tests under -j8, as I found it the most effective 
combination of supporting tests stuck on I/O while keeping the CPUs busy, but 
it does mean that in some cases there's a lot pending on the CPUs, and 
depending on the exact test ordering in a run presumably some more sensitive 
tests could be impacted.

I have in fact seen an increase in random tests generating warnings (fail, then 
pass) than the worker had previously.  I suspect the benefits of the extra 
parallelism on total test time (-j8 is about 20% faster than -j4) probably 
isn't valuable enough and will most likely be reducing it a bit.

--
nosy: +db3l

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

STINNER Victor  added the comment:

The test still fails randomly:
https://buildbot.python.org/all/#/builders/3/builds/2469

--
resolution: fixed -> 
status: closed -> open

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[Stefan Krah]

Stefan Krah added the comment:

It looks like it happened again:

http://buildbot.python.org/all/builders/x86%20Gentoo%20Non-Debug%203.x/builds/5223/steps/test/logs/stdio


==
ERROR: test_default_timeout (test.test_threading.BarrierTests)
--
Traceback (most recent call last):
  File 
/var/lib/buildslave/3.x.murray-gentoo-wide/build/Lib/test/lock_tests.py, line 
876, in test_default_timeout
self.run_threads(f)
  File 
/var/lib/buildslave/3.x.murray-gentoo-wide/build/Lib/test/lock_tests.py, line 
705, in run_threads
f()
  File 
/var/lib/buildslave/3.x.murray-gentoo-wide/build/Lib/test/lock_tests.py, line 
871, in f
i = barrier.wait()
  File /var/lib/buildslave/3.x.murray-gentoo-wide/build/Lib/threading.py, 
line 616, in wait
self._wait(timeout)
  File /var/lib/buildslave/3.x.murray-gentoo-wide/build/Lib/threading.py, 
line 654, in _wait
raise BrokenBarrierError
threading.BrokenBarrierError

--
Ran 138 tests in 22.880s

--
nosy: +skrah

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[Charles-François Natali]

Charles-François Natali neolo...@free.fr added the comment:

Victor, can I commit it?

--

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

STINNER Victor victor.stin...@haypocalc.com added the comment:

YES YOU CAN

--

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[Roundup Robot]

Roundup Robot devn...@psf.upfronthosting.co.za added the comment:

New changeset aa9c0fdf2143 by Charles-François Natali in branch '3.2':
Issue #11871: In test_threading.BarrierTests, bump the default barrier timeout
http://hg.python.org/cpython/rev/aa9c0fdf2143

New changeset e8da570d29a8 by Charles-François Natali in branch 'default':
Issue #11871: In test_threading.BarrierTests, bump the default barrier timeout
http://hg.python.org/cpython/rev/e8da570d29a8

--
nosy: +python-dev

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[Charles-François Natali]

Charles-François Natali neolo...@free.fr added the comment:

 YES YOU CAN

:-)

--
resolution:  - fixed
stage: patch review - committed/rejected
status: open - closed
versions: +Python 3.2

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[Charles-François Natali]

Charles-François Natali neolo...@free.fr added the comment:

The attached patch bumps the barrier's default timeout to 300ms: it should be 
more than enough (unless you got a really crappy scheduler, or a really heavily 
loaded machine), especially since this problem doesn't seem to occur often 
(AFAICT).

--
keywords: +needs review, patch
stage:  - patch review
Added file: http://bugs.python.org/file22761/test_barrier_timeout.diff

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[Charles-Francois Natali]

Charles-Francois Natali neolo...@free.fr added the comment:

The most obvious explanation for that failure is that the barrier's timeout is 
too low.

   def test_default_timeout(self):
   
   Test the barrier's default timeout
   
   #create a barrier with a low default timeout
   barrier = self.barriertype(self.N, timeout=0.1)

If the last thread waits on the barrier more than 0.1s after the first thread, 
then you'll get a BrokenBarrierError.
A 0.1s delay is not that much, 100ms was the default quantum with Linux O(1) 
scheduler...

--
nosy: +neologix

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue11871] test_default_timeout() of test_threading.BarrierTests failure: BrokenBarrierError

[STINNER Victor]

New submission from STINNER Victor victor.stin...@haypocalc.com:

While trying to reproduce issue #11870 using gdb -args ./python 
Lib/test/regrtest.py -F -v --timeout=600 test_threading, I had the following 
error on Linux:
--
test_default_timeout (test.test_threading.BarrierTests) ... [Thread 
0x71acf700 (LWP 27178) exited]
[New Thread 0x71acf700 (LWP 27181)]
[New Thread 0x712ce700 (LWP 27182)]
[New Thread 0x73c99700 (LWP 27183)]
[New Thread 0x7325a700 (LWP 27184)]
Unhandled exception in thread started by function task at 0x1302340
Unhandled exception in thread started by function task at 0x1302340
Unhandled exception in thread started by function task at 0x1302340
Traceback (most recent call last):
Unhandled exception in thread started by function task at 0x1302340
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 37, in task
Traceback (most recent call last):
Traceback (most recent call last):
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 37, in task
Traceback (most recent call last):
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 37, in task
f()
f()
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 37, in task
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 838, in f
ERROR
--

--
ERROR: test_default_timeout (test.test_threading.BarrierTests)

Traceback (most recent call last):
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 843, in 
test_default_timeout
self.run_threads(f)
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 672, in 
run_threads
f()
  File /home/haypo/prog/HG/cpython/Lib/test/lock_tests.py, line 838, in f
i = barrier.wait()
  File /home/haypo/prog/HG/cpython/Lib/threading.py, line 472, in wait
self._enter() # Block while the barrier drains.
  File /home/haypo/prog/HG/cpython/Lib/threading.py, line 496, in _enter
raise BrokenBarrierError
threading.BrokenBarrierError
--

The error occured on:

 * Ubuntu 10.04
 * Python 3.3 (2127df2c972e)
 * Intel(R) Core(TM)2 Quad  CPU   Q9300  @ 2.50GHz
 * 4 GB of memory

--
components: Tests
messages: 133995
nosy: haypo
priority: normal
severity: normal
status: open
title: test_default_timeout() of test_threading.BarrierTests failure: 
BrokenBarrierError
versions: Python 3.3

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11871
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com