Notices

I downloaded a cool app, which displays many items of text in a scrollable view, like the builtin "Contacts" but without the thumbnails on each row.
Because of the small screen, lots of time has to be spent scrolling up and down. Just like in "contacts", there is plenty of spacing between the lines, I'd say just enough to squeeze in another line of text between each existing one.

Is there any general option somewhere to decrease line spacing?
After chmod'ing the python source code to 777 as root, I could edit it as a normal user. The data is displayed in a gtk.Treeview Is there any function one can call on a treeview that will result in less line spacing?