[issue38190] regrtest: test suite completes but Tests Result is not displayed and the process hangs

[STINNER Victor]

STINNER Victor  added the comment:

I pushed different regrtest bugfixes. The situation should now be less worse. I 
close the issue.

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

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[issue38190] regrtest: test suite completes but Tests Result is not displayed and the process hangs

[STINNER Victor]

STINNER Victor  added the comment:

> https://buildbot.python.org/all/#/builders/225/builds/239

I forgot to mention the buildbot name: AMD64 FreeBSD 10-STABLE Non-Debug 3.8.

> It may be a regression caused by bpo-37531.
> (...)
> So main_process could be max(PROGRESS_UPDATE, PROGRESS_MIN_TIME) x 2 = 1 
> minute, instead of 30 minutes.

I pushed a change for that:

New changeset 46b0b81220a23bc4aee5ba3ba67e8cf1b5df7960 by Victor Stinner in 
branch 'master':
bpo-37531: regrtest main process uses shorter timeout (GH-16220)
https://github.com/python/cpython/commit/46b0b81220a23bc4aee5ba3ba67e8cf1b5df7960

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[issue38190] regrtest: test suite completes but Tests Result is not displayed and the process hangs

[STINNER Victor]

STINNER Victor  added the comment:

> https://buildbot.python.org/all/#/builders/225/builds/239

This bug only occurred once, the next build (240) was fine.

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[issue38190] regrtest: test suite completes but Tests Result is not displayed and the process hangs

[STINNER Victor]

STINNER Victor  added the comment:

> command timed out: 1200 seconds without output running ['make', 
> 'buildbottest', 'TESTOPTS=-j2 -j4 ${BUILDBOT_TESTOPTS}', 'TESTPYTHONOPTS=', 
> 'TESTTIMEOUT=900'], attempting to kill

faulthandler is supposed to display the traceback where the test hangs, but for 
the main process, libregrtest uses a delay of timeout x 2 seconds:

self.worker_timeout = self.ns.timeout * 1.5
self.main_timeout = self.ns.timeout * 2.0

Here timeout=900 ("TESTTIMEOUT=900"), so main_timeout = 1800 seconds (30 
minutes), whereas buildbot timeout is 1200 seconds (20 minutes) :-(

In fact, main_timeout can be *way* shorter: the main process calls 
faulthandler.dump_traceback_later(self.main_timeout, exit=True) every 
max(PROGRESS_UPDATE, PROGRESS_MIN_TIME) seconds (or more often): every 30 
seconds (of more often).

So main_process could be max(PROGRESS_UPDATE, PROGRESS_MIN_TIME) x 2 = 1 
minute, instead of 30 minutes.

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[issue38190] regrtest: test suite completes but Tests Result is not displayed and the process hangs

[STINNER Victor]

New submission from STINNER Victor :

https://buildbot.python.org/all/#/builders/225/builds/239

...
0:21:16 load avg: 2.54 [422/423] test_venv passed (1 min 31 sec) -- running: 
test_tools (1 min 27 sec)
running: test_tools (1 min 57 sec)
running: test_tools (2 min 27 sec)
running: test_tools (2 min 57 sec)
running: test_tools (3 min 27 sec)
0:23:42 load avg: 1.48 [423/423] test_tools passed (3 min 52 sec)
command timed out: 1200 seconds without output running ['make', 'buildbottest', 
'TESTOPTS=-j2 -j4 ${BUILDBOT_TESTOPTS}', 'TESTPYTHONOPTS=', 'TESTTIMEOUT=900'], 
attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=2628.905564


It may be a regression caused by bpo-37531.

--
components: Tests
messages: 352574
nosy: pablogsal, vstinner
priority: normal
severity: normal
status: open
title: regrtest: test suite completes but Tests Result is not displayed and the 
process hangs
versions: Python 3.8

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Re: Result is not Displayed

[Peter Otten]

prihantoro2...@gmail.com wrote:

> Dear all,
> 
> i am new to Python and have this problem
> 
> =
> import nltk
> puzzle_letters = nltk.FreqDist('egivrvonl')
> obligatory = 'r'
> wordlist = nltk.corpus.words.words()
> [w for w in wordlist if len(w) >= 6
> and obligatory in w
> and nltk.FreqDist(w) <= puzzle_letters]
> print puzzle_letters
> ==
> 
> this gives me 
> while the expected outcome is ['glover', 'govern', ...]
> did i miss something?

You asked for letters when you wanted to see the words. You actually build 
the list of words with

> [w for w in wordlist if len(w) >= 6
> and obligatory in w
> and nltk.FreqDist(w) <= puzzle_letters]

but don't even bind it to a name. Try

words = [
w for w in wordlist if len(w) >= 6
and obligatory in w
and nltk.FreqDist(w) <= puzzle_letters
]
print words

to get what you want.

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Re: Result is not Displayed

[Irmen de Jong]

On 22-11-2016 9:18, prihantoro2...@gmail.com wrote:
> Dear all, 
> 
> i am new to Python and have this problem
> 
> =
> import nltk
> puzzle_letters = nltk.FreqDist('egivrvonl')
> obligatory = 'r'
> wordlist = nltk.corpus.words.words()
> [w for w in wordlist if len(w) >= 6
> and obligatory in w
> and nltk.FreqDist(w) <= puzzle_letters]
> print puzzle_letters
> ==
> 
> this gives me 
> while the expected outcome is ['glover', 'govern', ...]
> did i miss something?


Review your code carefully. You're printing the wrong thing at the end, and 
you're doing
nothing with the list comprehension that comes before it.

-irmen

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Result is not Displayed

[prihantoro2001]

Dear all, 

i am new to Python and have this problem

=
import nltk
puzzle_letters = nltk.FreqDist('egivrvonl')
obligatory = 'r'
wordlist = nltk.corpus.words.words()
[w for w in wordlist if len(w) >= 6
and obligatory in w
and nltk.FreqDist(w) <= puzzle_letters]
print puzzle_letters
==

this gives me 
while the expected outcome is ['glover', 'govern', ...]
did i miss something?

Thank you

Pri
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