Question

I have a BASE_DIR setting in my settings.py file:

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

I need to use this variable in my logging.ini file to setup my file handler paths.

The initialization of logging happens in the same file, the settings.py file, below my BASE_DIR variable. Here I tell it the path of my logging.ini file:

LOG_INIT_DONE=False
if not LOG_INIT_DONE:
   logging.config.fileConfig(LOGGING_INI)
   LOG_INIT_DONE=True

I noticed fileConfig can take a default parameter. I’m not sure if this is what I’m looking for, but I can’t seem to find any documentation on how to use this parameter.

Thanks,
Pete

Answer 1

As per the docs,

logging.fileConfig(fname[, defaults])

Reads the logging configuration from a
ConfigParser-format file named fname.
This function can be called several
times from an application, allowing an
end user the ability to select from
various pre-canned configurations (if
the developer provides a mechanism to
present the choices and load the
chosen configuration). Defaults to be
passed to ConfigParser can be
specified in the defaults argument.

So you can simply pass as the second argument a dictionary like

{'basedir': BASE_DIR}

and then just interpolate its basedir entry in your logging.ini file:

[SomeSection]
somefile: %(basedir)s/foobar.txt

and the like!