Ubuntu – In development based on Quickly, why do codes start with “from gi.repository import Gtk”

application-developmentgtkpygtkquickly

I am developing apps in Quickly. Default codes start with from gi.repository import Gtk. Why is it so and not simply import gtk for example?

The point is, a lot of tutorials, documentation and forums answers on the web are based on the second importation, as far as I have seen.

from gi.repository import Gtk uses the new PyGObject instead of the older PyGTK that is used with import gtk.

PyGTK has been deprecated in favor of PyGI+GTK. Because of that, a version of PyGTK for Python 3 was never written.

To use PyGI+GTK in Python 3, you need to install the python3-gobject package and do

from gi.repository import Gtk

For a quick introduction on porting PyGTK code to PyGI+GTK, see here:

For a full tutorial, see here:

You should install the correct Python 3 packages, these are prepended with python3- instead of python- .

This will do the trick:

sudo apt-get install python3-gi

Or search this package in your favorite package manager.