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From: Daniel Dehennin <daniel.dehennin@ac-dijon.fr>
To: python-list@python.org
Subject: [SOLVED] Re: Making `logging.basicConfig` log to *both* `sys.stderr` and `sys.stdout`?
References: <34939e5a-19ba-4cc5-b10b-36f8b2e42830@h9g2000vbr.googlegroups.com> <87objt5u16.fsf@daniel.eole.lan>
Organisation: Eole
Date: Wed, 24 Oct 2012 11:32:24 +0200
In-Reply-To: <87objt5u16.fsf@daniel.eole.lan> (Daniel Dehennin's message of "Tue, 23 Oct 2012 13:04:21 +0200")
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Daniel Dehennin <Daniel.Dehennin@ac-dijon.fr> writes:

> Hello,

Hi


[...]

> I tried to setup the same for my scripts with
> "logging.config.dictConfig()" without much success, I want to limit
> output to stdout to INFO, everything bellow INFO should be sent to
> stderr instead.
>
> Any hints?

I finally find a solution for my script, I added a filter.

Regards.

#+begin_src python
class UniqLevelFilter(logging.Filter):
    def __init__(self, level):
        self._level =3D level

    def filter(self, rec):
        return rec.levelno =3D=3D self._level

def init_logging(options):
    # TODO: color stderr messages by level if sys.stderr.isatty()
    # http://stackoverflow.com/questions/384076/how-can-i-color-python-logg=
ing-output
    # http://plumberjack.blogspot.fr/2010/12/colorizing-logging-output-in-t=
erminals.html
    config =3D { 'version' : 1,
               'filters' : { 'stdout' : { '()' : '__main__.UniqLevelFilter',
                                          'level' : logging.INFO, },
                },
               'formatters' : { 'stdout' : { 'format' : '%(message)s',
                                             'datefmt' : '', },
                                'stderr' : { 'format' : '%(message)s',
                                             'datefmt' : '', },
                },
               'handlers' : { 'stdout' : { 'class' : 'logging.StreamHandler=
',
                                           'stream' : 'ext://sys.stdout',
                                           'level' : 'INFO',
                                           'filters' : ['stdout'],
                                           'formatter' : 'stdout', },
                              'stderr' : { 'class' : 'logging.StreamHandler=
',=20
                                           'stream' : 'ext://sys.stderr',
                                           'level' : 'WARNING',=20
                                           'formatter' : 'stderr', }
                },
               'root' : { 'level' : options.log_level.upper(),
                          'handlers' : ['stdout', 'stderr'],
                },
    }

    logging.config.dictConfig( config )
    return logging.getLogger()

#+end_src

=2D-=20
Daniel Dehennin
EOLE

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