logger.conf

[loggers]
keys=root

[logger_root]
level=DEBUG
handlers=console,rotating


[handlers]
keys=console,rotating

[handler_console]
class=StreamHandler
level=DEBUG
formatter=simple
args=(sys.stderr,)

[handler_rotating]
class=handlers.RotatingFileHandler
level=INFO
formatter=verbose
args=('logs/app.log', 'a', 10*1024*1024, 10, 'utf-8')

[formatters]
keys=simple,verbose

[formatter_simple]
format=%(levelname)s %(asctime)s %(message)s
datefmt=%Y-%m-%d %H:%M:%S

[formatter_verbose]
format=%(levelname)s %(asctime)s %(module)s %(filename)s %(lineno)s %(message)s
datefmt=%Y-%m-%d %H:%M:%S