Modern Python Standard Library Cookbook

Basic logging

One of the first requirements of a console software is for it to log what it does, that is, what's happened, and any warnings or errors. Especially when we are talking about long-term software or daemons running in the background.

Sadly, if you've ever tried to use the Python logging module, you've probably noticed that you can't get any output apart from errors.

That's because the default enabled level is WARNING, so that only warnings and worse are tracked. Little tweaks are needed to make logging generally available.