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Question about logging.config.dictConfig

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From: rambiusp...@gmail.com (Ivan \"Rambius\" Ivanov)
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Subject: Question about logging.config.dictConfig
Date: Tue, 7 Feb 2023 17:58:26 -0500
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by: Ivan \Rambius\ Ivano - Tue, 7 Feb 2023 22:58 UTC

Hello,

I am trying to configure my loggers using dictConfig, but they do not
print anything. Here are more details.

I have several python scripts that use a similar logging setup. I put
the common configuration in a separate module myloggingconf.py:

# myloggingconf.py
import logging

def configure_logging():
default = logging.Formatter('%(asctime)s %(levelname)-7s %(name)s
%(funcName)s %(message)s')

consoleHandler = logging.StreamHandler()
consoleHandler.setFormatter(default)

rootLogger = logging.getLogger()
rootLogger.addHandler(consoleHandler)
rootLogger.setLevel(logging.INFO)

Then I use it in the other scripts as:

# uselog.py
import logging
import os

from myloggingconf import configure_logging

logger = logging.getLogger(os.path.basename(__file__))

def dosmth():
logger.debug("debug")
logger.info("info")
logger.warning("warning")
logger.error("error")

def main():
configure_logging()
dosmth()

if __name__ == '__main__':
main()

This works correctly and the log messages about INFO print out. Now I
want to try dictConfig. I changed myloggingconf.configure_logging to:

# myloggingconf.py
import logging.config

def configure_logging():
config = {
'version': 1,
'disable_existing_loggers': True,
'formatters': {
'default': {
'fmt': '%(asctime)s %(levelname)-7s %(name)s
%(funcName)s %(message)s'
}
},
'handlers': {
'stdout': {
'level': 'DEBUG',
'class': 'logging.StreamHandler',
'formatter': 'default',
}
},
'loggers': {
'': {
'handlers': ['stdout'],
'level': 'DEBUG'
}
}
}
logging.config.dictConfig(config)

When I run uselog.py it prints nothing. I am wondering what is wrong
with the second configuration. I will appreciate any help.

Regards
rambius

--
Tangra Mega Rock: http://www.radiotangra.com

Re: Question about logging.config.dictConfig

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From: ram...@zedat.fu-berlin.de (Stefan Ram)
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Subject: Re: Question about logging.config.dictConfig
Date: 7 Feb 2023 23:29:26 GMT
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by: Stefan Ram - Tue, 7 Feb 2023 23:29 UTC

"Ivan \"Rambius\" Ivanov" <rambiusparkisanius@gmail.com> writes:
># uselog.py

I haven't really learned how to use logging yet, but made
this observation just by trial and error:

The following modified "uselog.py" prints nothing here:

# uselog.py
import logging
import os

from myloggingconf import configure_logging

def dosmth():
logger.debug("debug")
logger.info("info")
logger.warning("warning")
logger.error("error")

def main():
global logger
logger = logging.getLogger(os.path.basename(__file__))
configure_logging()
dosmth()

if __name__ == '__main__':
main()

, but when I swap two lines, it prints something:

# uselog.py
import logging
import os

from myloggingconf import configure_logging

def dosmth():
logger.debug("debug")
logger.info("info")
logger.warning("warning")
logger.error("error")

def main():
global logger
configure_logging()
logger = logging.getLogger(os.path.basename(__file__))
dosmth()

if __name__ == '__main__':
main()
.

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devel / comp.lang.python / Re: Question about logging.config.dictConfig

Subject	Author
Question about logging.config.dictConfig	Ivan \"Rambius\" Ivanov
Re: Question about logging.config.dictConfig	Stefan Ram