Update the Python version supported by Plesk
The current version of Python supported by Plesk is 2.6.5. This should be upgraded to the latest 2.x release 2.7.7.
Also support for choosing 2.x or 3.x on a per site basis would be great.
Plesk supports whichever Python version is installed on your server. If your OS does support the latest Python, then you just need to update it. If you don;t know how to update system packages, then maybe the other upcoming feature can help: http://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/4543864-keep-server-up2date-with-apt-get-or-yum-updat