How to log both to console and file using Python?

Question

I am working Python and I need to logger so I decided to start using RotatingFileHandler. Below is my logging.conf file

[loggers]
keys=root

[handlers]
keys=logfile

[formatters]
keys=logfileformatter

[logger_root]
level=DEBUG
handlers=logfile

[formatter_logfileformatter]
format=%(asctime)s %(name)-12s: %(levelname)s %(message)s

[handler_logfile]
class=handlers.RotatingFileHandler
level=NOTSET
args=('ookagent.log', 'a', 50000000000, 5)
formatter=logfileformatter

And below is my Python script from which I am successfully able to log to the files. But I am not sure how to log both to files and console as well.

#!/usr/bin/python
import logging
import logging.config
import logging.handlers

# using RotatingFileHandler for logging purpose
logging.config.fileConfig('logging.conf')
ooklogger = logging.getLogger('')


ooklogger.info("HelloWorld")

Can we make a change in my logging.conf file by which I can login both to console and files as well? Is it possible to do that?

Answer 1

Sure, the logging configuration file format lets you specify multiple handlers. You can use a StreamHandler to log to the console. That would entail modifications like these to your config file:

[handlers]
keys=logfile,logconsole

[handler_logconsole]
class=StreamHandler
# other configuration directives as you like

[logger_root]
handlers=logfile,logconsole

See the config file documentation for more information and examples.