You can’t use datetime in a config file, as it doesn’t know what it means. You can however add the Filehandler in the python file itself:
import logging.config
from datetime import datetime
logging.config.fileConfig('aaa.conf')
logger = logging.getLogger('MainLogger')
fh = logging.FileHandler('{:%Y-%m-%d}.log'.format(datetime.now()))
formatter = logging.Formatter('%(asctime)s | %(levelname)-8s | %(lineno)04d | %(message)s')
fh.setFormatter(formatter)
logger.addHandler(fh)
logger.debug("TEST")
This way you can set the date as the file name in the handler.
This is the config file, note that you had a typo in the last formatter, you put fillname instead of filename and you forgot ( in message.
[loggers]
keys=root,MainLogger
[handlers]
keys=consoleHandler
[formatters]
keys=consoleFormatter
[logger_root]
level=DEBUG
handlers=consoleHandler
[logger_MainLogger]
level=DEBUG
handlers=consoleHandler
qualname=MainLogger
propagate=0
[handler_consoleHandler]
class=StreamHandler
level=DEBUG
formatter=consoleFormatter
args=(sys.stdout,)
[formatter_consoleFormatter]
format=%(asctime)s | %(levelname)-8s | %(filename)s-%(funcName)s-%(lineno)04d | %(message)s
This Should work just fine.