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Groups > comp.lang.python > #100634
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Ignore error with non-zero exit status (was: How to ignore error with anon-zero exit status) |
| Date | 2015-12-20 22:22 +0100 |
| Organization | PointedEars Software (PES) |
| Message-ID | <3883651.fOIMIIEhYO@PointedEars.de> (permalink) |
| References | <mailman.4.1450632635.2237.python-list@python.org> |
Ganesh Pal wrote:
> def run_scanner():
> """
> Mount /filesystems and run scanner
> """
> for cmd in [" mount /filesystems ", " scanner_start"]:
> try:
> out, err, ret = run(cmd, timeout=3600)
> if ret != 0:
> logging.error("Can't run %s got %s (%d)!" % (cmd, err,
> ret))
Python 2.6 (why are you using the oldest Python minor version?) introduced
string.format(), so you should use that instead of the old string format
operator (“%”):
logging.error("Can't run {0}; got {1} ({2:d})!".format(cmd, err, ret))
<https://docs.python.org/2.6/library/stdtypes.html#str.format>
On the other hand, you do not need the format operator to begin with:
logging.error("Can't run %s; got %s (%d)!", cmd, err, ret)
<https://docs.python.org/2.6/library/logging.html#logging.error>
> return False
> except Exception as e:
> logging.exception("Failed to run %s got %s" % (cmd, e))
See above.
> return False
> logging.info("Mount /tmp.....Done !!!")
> time.sleep(30)
>
>
> Iam on python 2.6 and Linux , I need you inputs on how to ignore an
> specific error when the mount fails
(Polite people would *ask* a *question*.)
> In general the mount has zero status if it succeeds and anon-zero exit
> status if it fails.
(“_a non-zero_”, with a space in-between. “anon” can be misunderstood as an
abbreviation for “anonymous”.)
> 1.But for one rare case the mount succeeds but returns anon-zero exit
> status and when we get “Reading GUID from da0xxx: No such file or
> directory” error , how to ignore this error and proceed with the above
> code
If the non-zero exit status is distinguishable from other non-zero statuses,
then you just test for that particular status code. Otherwise, you should
simply test if the filesystem has been mounted before you proceed.
> 2. Also need to add this check only for mount case i.e mount
> /filesystems and not scanner_start
Most simple solution for this: Do not use a loop. More "complicated"
solution: Use an “if” statement.
<http://www.catb.org/~esr/faqs/smart-questions.html>
--
PointedEars
Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.
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How to ignore error with anon-zero exit status Ganesh Pal <ganesh1pal@gmail.com> - 2015-12-20 23:00 +0530
Ignore error with non-zero exit status (was: How to ignore error with anon-zero exit status) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-20 22:22 +0100
Re: Ignore error with non-zero exit status (was: How to ignore error with anon-zero exit status) Chris Angelico <rosuav@gmail.com> - 2015-12-21 08:56 +1100
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-20 23:46 +0100
Re: Ignore error with non-zero exit status Chris Angelico <rosuav@gmail.com> - 2015-12-21 10:09 +1100
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 08:51 +0100
Re: Ignore error with non-zero exit status Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-21 12:58 +0000
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 14:19 +0100
Re: Ignore error with non-zero exit status Chris Angelico <rosuav@gmail.com> - 2015-12-22 00:23 +1100
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 15:05 +0100
Re: Ignore error with non-zero exit status Chris Angelico <rosuav@gmail.com> - 2015-12-22 01:11 +1100
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 15:19 +0100
Re: Ignore error with non-zero exit status Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-21 16:07 +0000
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 23:30 +0100
Re: Ignore error with non-zero exit status Random832 <random832@fastmail.com> - 2015-12-21 11:30 -0500
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 23:27 +0100
Re: Ignore error with non-zero exit status Steven D'Aprano <steve@pearwood.info> - 2015-12-22 10:32 +1100
Re: Ignore error with non-zero exit status Terry Reedy <tjreedy@udel.edu> - 2015-12-21 18:53 -0500
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-22 13:17 +0100
Re: Ignore error with non-zero exit status Chris Angelico <rosuav@gmail.com> - 2015-12-22 11:05 +1100
Re: Ignore error with non-zero exit status Ian Kelly <ian.g.kelly@gmail.com> - 2015-12-21 17:17 -0700
Re: Ignore error with non-zero exit status Chris Angelico <rosuav@gmail.com> - 2015-12-22 11:25 +1100
Re: Ignore error with non-zero exit status Ian Kelly <ian.g.kelly@gmail.com> - 2015-12-21 13:30 -0700
Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Ben Finney <ben+python@benfinney.id.au> - 2015-12-22 07:58 +1100
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Ian Kelly <ian.g.kelly@gmail.com> - 2015-12-21 14:16 -0700
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Jon Ribbens <jon+usenet@unequivocal.co.uk> - 2015-12-21 21:44 +0000
Re: Meaning and purpose of the Subject field Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 23:55 +0100
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Steven D'Aprano <steve@pearwood.info> - 2015-12-22 10:14 +1100
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Jon Ribbens <jon+usenet@unequivocal.co.uk> - 2015-12-21 23:24 +0000
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Ian Kelly <ian.g.kelly@gmail.com> - 2015-12-21 16:57 -0700
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Tim Chase <python.list@tim.thechases.com> - 2015-12-22 09:56 -0600
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Cameron Simpson <cs@zip.com.au> - 2015-12-22 14:36 +1100
Re: Meaning and purpose of the Subject field Random832 <random832@fastmail.com> - 2015-12-21 23:22 -0500
Re: Meaning and purpose of the Subject field Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-22 13:26 +0100
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Grant Edwards <invalid@invalid.invalid> - 2015-12-22 15:17 +0000
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Ian Kelly <ian.g.kelly@gmail.com> - 2015-12-22 08:28 -0700
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Grant Edwards <invalid@invalid.invalid> - 2015-12-22 22:32 +0000
Re: Meaning and purpose of the Subject field (was: Ignore error with non-zero exit status) Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-12-21 16:55 -0500
Re: Ignore error with non-zero exit status (was: How to ignore error with anon-zero exit status) Ganesh Pal <ganesh1pal@gmail.com> - 2015-12-21 08:22 +0530
Re: Ignore error with non-zero exit status Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-12-21 08:54 +0100
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