Alex Rivera | Logout

Rotate logfiles each time the application is started (Python)

Asked 2011-01-11T06:44:06.320
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I'm using the logging module in Python and I would like it to create a new logfile each time my application is started. The older logfiles shoud be rotated (eg: logfile.txt -> logfile1.txt, etc).

I already found this:

http://docs.python.org/library/logging.html

BaseRotatingHandler is the base class for handlers that rotate log files at a certain point. It is not meant to be instantiated directly. Instead, use RotatingFileHandler or TimedRotatingFileHandler.

The RotatingFileHandler does a rollover at a predetermined size and the TimedRotatingFileHandler does a rollover based on the product of when and interval. Both are not what I want, I want the rotation to happen immediately when my application starts.

python logging rotation
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Log Rotation and RoatatingFileHandler are usually designed and desirable when the application is running for a very long time (days) and you want the log to keep rotation. Under cases where I have to rotate the log upon restart of the application, I had to do that outside of the Logfile handler, which was easier. It was like, before the log writer call for the first time, I would see if the log file already existed, and if yes, rename it and create a new log file. The renaming should be differentiated from the handler's renaming mechanism.

answered 2011-01-11T06:51:53.583

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