How to use logging with python's fileConfig and configure the logfile filename
PythonFileLoggingConsolePython Problem Overview
I have a logging configuration file for logging to console and a file with different formats and levels. In my python script I can load this configuration and basically console and file output are ok.
I set the file name in the config file as shown below.
Is it possible to set that file name in the python script itself?
python code:
# set up logging
logging.config.fileConfig(loginipath)
logger = logging.getLogger('sLogger')
# log something
logger.debug('debug message')
logger.info('info message')
logger.warn('warn message')
logger.error('error message')
logger.critical('critical message')
logging config file:
[loggers]
keys=root,sLogger
[handlers]
keys=consoleHandler,fileHandler
[formatters]
keys=fileFormatter,consoleFormatter
[logger_root]
level=DEBUG
handlers=consoleHandler
[logger_sLogger]
level=DEBUG
handlers=consoleHandler,fileHandler
qualname=sLogger
propagate=0
[handler_consoleHandler]
class=StreamHandler
level=WARNING
formatter=consoleFormatter
args=(sys.stdout,)
[handler_fileHandler]
class=FileHandler
level=DEBUG
formatter=fileFormatter
args=('logfile.log',)
[formatter_fileFormatter]
format=%(asctime)s - %(name)s - %(levelname)s - %(message)s
datefmt=
[formatter_consoleFormatter]
format=%(levelname)s - %(message)s
datefmt=
Python Solutions
Solution 1 - Python
Change your handler_fileHandler section like so:
[handler_fileHandler]
class=FileHandler
level=DEBUG
formatter=fileFormatter
args=('%(logfilename)s',)
and then add a defaults argument to the fileConfig call
logging.config.fileConfig(loginipath, defaults={'logfilename': '/var/log/mylog.log'})
Solution 2 - Python
Both handlers worked for me:
(1)
logging.config.fileConfig( 'logging.ini' , disable_existing_loggers=False)
[handler_myhandler1]
class=FileHandler
level=DEBUG
formatter=form01
args=('python.log', 'w')
(2)
logging.config.fileConfig( 'logging.ini' , disable_existing_loggers=False, defaults={ 'logfilename' : getSomeName() } )
[handler_myhandler2]
class=FileHandler
level=DEBUG
formatter=form01
args=('%(logfilename)s','w')
after reading examples at https://docs.python.org/2/library/logging.config.html
Solution 3 - Python
Try calling logging.config.dictConfig() after fileConfig() and just setting the filename.