I would like to use a different logging level in development and production. To do so, I need early in my program to set the minimal level for logs to be triggered. The default is to output all severities:
from loguru import logger as log
log.debug("a debug log")
log.error("an error log")
# output
# 2022-09-15 16:51:23.325 | DEBUG | __main__:<module>:3 - a debug log
# 2022-09-15 16:51:23.327 | ERROR | __main__:<module>:4 - an error log
There is a Changing the level of an existing handler section in the documentation, that states among others that
Once a handler has been added, it is actually not possible to update it. (...)
The most straightforward workaround is to
remove()your handler and then re-add()it with the updated level parameter.
My problem is that I have not added anything, so there is nothing to remove. I also cannot modify log. So what should I do?
Like so:
import sys
from loguru import logger as log
log.remove() #remove the old handler. Else, the old one will work along with the new one you've added below'
log.add(sys.stderr, level="INFO")
log.debug("debug message")
log.info("info message")
log.warning("warning message")
log.error("error message")
You can use sys.stdout or other file object, in place of sys.stderr.
More info in this related GitHub thread.