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Groups > comp.lang.python > #98221
| From | Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Unbuffered stderr in Python 3 |
| Date | 2015-11-04 12:49 +0100 |
| Message-ID | <mailman.12.1446637811.16136.python-list@python.org> (permalink) |
| References | (4 earlier) <mailman.1.1446589565.20590.python-list@python.org> <56397921$0$11094$c3e8da3@news.astraweb.com> <mailman.5.1446625197.16136.python-list@python.org> <5639dcdf$0$1620$c3e8da3$5496439d@news.astraweb.com> <n1cng6$m9a$1@ger.gmane.org> |
On 04.11.2015 11:43, Wolfgang Maier wrote:
> On 04.11.2015 11:24, Steven D'Aprano wrote:
>> On Wed, 4 Nov 2015 07:19 pm, Wolfgang Maier wrote:
>>
>>> On 04.11.2015 04:18, Steven D'Aprano wrote:
>>>>
>>>> This is one of the offending line from our code base:
>>>>
>>>> print('<4>Suspicious answer "{}"!'.format(answer), file=sys.stderr)
>>>>
>>>> So that ought to be terminated by a newline. And yet, the stderr output
>>>> doesn't show up until the program exits.
>>>>
>>>
>>> For me, that prints immediately. Where is your output going? Console,
>>> file, ...?
>>
>> Going to stderr, like the whole thread is about :-)
>>
>
> I see :), but seriously, what I meant was: is it going to the console
> directly or is your code base redirecting sys.stderr to another buffered
> object first?
>
Standard I/O streams are line-buffered only if interactive (i.e.,
connected to a console), but block-buffered otherwise.
What does sys.stderr.isatty() return?
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Unbuffered stderr in Python 3 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-11-02 18:52 +1100
Re: Unbuffered stderr in Python 3 Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2015-11-02 11:48 +0100
Re: Unbuffered stderr in Python 3 Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2015-11-02 11:54 +0100
Re: Unbuffered stderr in Python 3 Nobody <nobody@nowhere.invalid> - 2015-11-03 07:10 +0000
Re: Unbuffered stderr in Python 3 Random832 <random832@fastmail.com> - 2015-11-03 10:00 -0500
Re: Unbuffered stderr in Python 3 Chris Angelico <rosuav@gmail.com> - 2015-11-04 02:42 +1100
Re: Unbuffered stderr in Python 3 Terry Reedy <tjreedy@udel.edu> - 2015-11-03 17:25 -0500
Re: Unbuffered stderr in Python 3 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-11-04 14:18 +1100
Re: Unbuffered stderr in Python 3 Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2015-11-04 09:19 +0100
Re: Unbuffered stderr in Python 3 Steven D'Aprano <steve@pearwood.info> - 2015-11-04 21:24 +1100
Re: Unbuffered stderr in Python 3 Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2015-11-04 11:43 +0100
Re: Unbuffered stderr in Python 3 Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2015-11-04 12:49 +0100
Re: Unbuffered stderr in Python 3 Random832 <random832@fastmail.com> - 2015-11-04 08:43 -0500
Re: Unbuffered stderr in Python 3 Terry Reedy <tjreedy@udel.edu> - 2015-11-04 18:00 -0500
Re: Unbuffered stderr in Python 3 srinivas devaki <mr.eightnoteight@gmail.com> - 2015-11-06 19:10 +0530
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