[Python] logger from jupyter notebook: does not work unless calling the root logger at least...

I would like to see the logging produced by some python code from within a Jupyter notebook (logging version '0.5.1.2', python 3.12).

If I run the following code:

import logging

logger = logging.getLogger()
logger.setLevel(logging.INFO)

logger.info("logging test")


I get no output.

But if I call the root logging first in a notebook cell:

import logging

logger = logging.getLogger()
logger.setLevel(logging.INFO)

logging.info("logging test") # calling the root logger


I get the expected "logging test", and every other subsequent logged message, like:

logger.info("another logging test")


works correctly.

So within the same session, if I do not call the root logger at least once, no logging message is shown. But if I run the root logger at least once, all works correctly.

Any idea or explanation why is it the case, or if I am doing something wrong?

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