Python: How to create log file everyday using logging module?

You have to create a TimedRotatingFileHandler:

from logging.handlers import TimedRotatingFileHandler
logname = "my_app.log"
handler = TimedRotatingFileHandler(logname, when="midnight", backupCount=30)
handler.suffix = "%Y%m%d"
logger.addHandler(handler)

This piece of code will create a my_app.log but the log will be moved to a new log file named my_app.log.20170623 when the current day ends at midnight.

I hope this helps.