#in settings.py

LOG_FILENAME = '/var/log/somefile.log'

logger = logging.getLogger('foo')
logger.setLevel(logging.DEBUG)
handler = logging.handlers.RotatingFileHandler(filename=LOG_FILENAME, maxBytes=1000000000, backupCount=5)
FORMAT = "[ %(asctime)s  %(levelname)s ] %(message)s"
formatter = logging.Formatter(FORMAT)
handler.setFormatter(formatter)
handler.setLevel(logging.DEBUG)
logger.addHandler(handler)

LOGGER = logger

#to use in apps/modules:
try:
    logging = settings.LOGGERG
except AttributeError:
    import logging