this post was submitted on 25 Mar 2024
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how to send the icecream output to a log file? [solved] (lemmy.eco.br)
submitted 8 months ago* (last edited 8 months ago) by [email protected] to c/python
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Hi, I'm currently using this to log my python process

logging.basicConfig(filename='filename.log', level=logging.DEBUG)

logger = logging.getLogger()

sys.stderr.write = logger.error

sys.stdout.write = logger.info

And then using print(f'{datetime.now()} log message') where I want to log.

It's working OK, buy I would like to live it to ic, but can't find any info on how to send the ic output to the logger.

Thanks for any help.

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[–] [email protected] 4 points 8 months ago (1 children)

Overwriting sys.stdout and sys.stderr seems like a Bad Idea™.

Browsing the icecream source code, it looks like you can do this:

logger = logging.getLogger()
ic.configureOutput(outputFunction=logger.debug)

And then just make sure the logger is configured to actually print at DEBUG level.

[–] [email protected] 1 points 8 months ago* (last edited 8 months ago) (1 children)

Thanks, tried the next

logging.basicConfig(filename='filename.log', level=logging.DEBUG)

logger = logging.getLogger()
ic.configureOutput(outputFunction=logger.debug)

ic('test')

But didn't create the log file and the output was printed on the screen and not on log file(that was never created anyway)

[–] [email protected] 3 points 8 months ago* (last edited 8 months ago) (1 children)

Just to confirm, if you change ic('test') to logger.debug('test') it works as expected? I.e. it creates the log file?

Edit: Also if you change the output format of the logger and use it as the outputFunction to ic, does it include the customized format?

I just want to confirm if your ic is routing through the logger or not, to know if it's a problem with your logging config or with ic.

[–] [email protected] 1 points 8 months ago* (last edited 8 months ago)

EDIT: I think I had something wrong on the logging.basicConfig() because now is creating the .log file when running that line and then the ic() is writing correctly on the log file.

Edit 2: I found what was happening, I was using another directory and now found the og log file with all the tests that were supposed lost.

Thanks for your help.

logger.debug('test') created the log file and logged test, after that ic('test') wrote correctly on the log file.

Restating the kernel and running again directly with ic('test') it wrote on the already existing log file.

So, to recap. If the .log file doesn't exists, ic() didn't create the file and nothing is logged, if the the log file already exists, then the ic() wrote correctly on the log file.

The only missing part is how to create the log file without needing of the logger.debub('').

Tried to create an empty log file with open('logfile.log', 'a').close() and the log file is created but is useless (dosen't even write the logger.debug('test') output)