TimedRotatingFileHandler.py

import logging
import time
from logging.handlers import TimedRotatingFileHandler
 
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
## Create a log file every seconds with a new log detail at the inteval of 2
handler = TimedRotatingFileHandler('app.log', when='s', interval=2, backupCount=3)
logger.addHandler(handler)
 
for i in range(20):
    logger.info(i)
    time.sleep(2)