I've just had a quick look for python Linux clipboard functions without success.

Some say Linux doesn't have a clipboard (which in itself is fair enough) and suggest looking to KDE/qt/Gnome/Gtk but my apps, eg Firefox have working clipboards regardless of whether I'm using Gnome or KDE and I guess work with other Desktops. I guess there must be something at a lower (X?) level?

Oh well, water butts are the order of the day... I'll try to have another look some time...