Clarify the meaning of "django catch-all logger"

[Jesse]

​Django docs state that, when DEBUG = True, all log messages INFO or higher should go to the console. However, it appears that the level is actually WARN or higher:

import logging
logger = logging.getLogger(__name__)

logger.info("info")
logger.warning("warning")
logger.error("error")
logger.critical("critical")

And the output in the console:

warning
error
critical

[Paweł Adamczak]

Is it considered a documentation error/typo, or is documentation correct here and the code should be updated to reflect it?

[Tim Graham]

This looks like a misunderstanding of how logging works. "The django catch-all logger" only processes messages in the "django" namespace. For example, this will log the message:

import logging
logger = logging.getLogger('django')
logger.info("info")

It's not the Django's documentation to do a comprehensive explanation of Python logging, but some improvement might be possible.

[Vedran Karačić]

​PR

[Tim Graham]

​PR

[Tim Graham <timograham@…>]

In f21915bb:

Fixed #27931 -- Clarified the meaning of "django catch-all logger."