python structlog - can i change log level dynamically but only for specific classes?

Question

my scenario is this - im using a simple logger, and have alot of log.info()/log.debug() messages in my code.

i would like to change the log level dynamically, mainly being able to "turn on/off" debug level logs.

my question is this - is it somehow possible to do so, but make the change only affect parts of my code? lets say only when im inside methods of a specific class. or is the only way to do something like that is to use a different log object for that class and change only its level?

Answer 1

You can achive this by using the stdlib logging output for structlog, and then just configure logging to different levels for each logger.

Every logger has a name, that is used to differenciate where the logs came from and how to handle them. usually you define a single logger per python file like this:

import logging

logger = logging.getLogger(__name__)

What this does is give the logger the name of the python module. for example if the file is proj/routers/route1.py then the logger name will be proj.routers.route1 .
This is useful because the std logging library allows you to configure a log level to the proj.routers logger, that will be applied to every proj.routers.* loggers.

see https://docs.python.org/3/howto/logging.html#configuring-logging