Python WatchedFileHandler和RotatingFileHandler

Question

I tried using RotatingFileHandler and WatchedFileHandler together, but getting duplicate logs. Can anybody help me please.

Code snippet to add the handlers

 log_root = getLogger(__name__).logger <br> log_root.addHandler(RotatingFileHanlder(__name__, maxBytes=1000000, backupCount=10)<br> log_root.addHandler(watchedFileHanlder(__name__) 

Answer 1

There's no point in adding a WatchedFileHandler and a RotatingFileHandler .

• If you want to control file rotation yourself, use a RotatingFileHandler .
• If you want externally controlled log rotation (eg using logrotate ), use a WatchedFileHandler .

Also, you might use __name__ for a logger, but typically a different file name is used for handlers.