In Workstation you can find the idle3 executable in /usr/bin but users will not note it because there is not a grafical launcher in the desktop, my U$ 0.02
Make idle3 a subpackage and make it available with a proper .desktop file and a .appdata.xml file
Also there are 2 python IDES in the repo than are python powered : eric and ninja-ide than can be included in the spin, also we have pydev but this is java powered