Normally, when you're watching a TV-Show — you don't need all its episodes right away; you just need a few for the next hour or so. The following scripts help you with exactly this! plex-autotag.py marks the new shows you add with tag keep1; plex-autodelete.py removes watched episodes from your drive; sonarr-refresher.py triggers sonarr to download few new episodes, to keep you always having your next fix. All in all — sonarr will download you a new episode after you've watched one.
All this magic works only for "main" user.
The autodelete script was originally taken from plex-api and then it was modified to remove only watched episodes, plus I've added a couple of tags.
It would've been better to make the sonarr script to work directly with Plex API instead of relying on the deleted files, but I'm not there yet.