按文件大小分割：RotatingFileHandler

按时间分割：TimedRotatingFileHandler

import logging

from logging.handlers import TimedRotatingFileHandler

logHandler = TimedRotatingFileHandler(filename="logfile.log", when="S", interval=1,

        backupCount=3, encoding='utf-8')

logHandler.suffix = "%Y%m%d%H%M"

logFormatter = logging.Formatter('[%(asctime)s %(filename)s:%(lineno)d %(levelname)s] %(message)s')

logHandler.setFormatter(logFormatter)

logger = logging.getLogger('MyLogger')

logger.addHandler(logHandler)

logger.setLevel(logging.INFO)

for k in range(3):

    logger.error("eror info: %d" % k)