Automagic Forum

I execute the script more than 30 times but I don't see somes wallpapers and other twice.
But if you don't know why it doesn't matter, the script run everyday so I'll forget if I see a wallpaper 15 or 5 days ago

The only way to find out is to log the wallpaper set. Create another global_wallpaper_log as list type. Then add one line at the end of the script. Later, you can check when it change and what wallpaper it has set. You can then see if the wallpaper appear twice/none in the last 15 executions.

But if you are good with current one, then just leave it as now.