If i create a quickly-project with the following command in terminal:

 quickly create ubuntu-application helloworld

and then add in the HelloworldWindow.py the following lines,

import sys
import pynotify

the line "import pynotify" produces the following error-output on my system when i want to run the application with

quickly run


/usr/lib/python2.7/dist-packages/gobject/constants.py:24: Warning: g_boxed_type_register_static: assertion g_type_from_name (name) == 0' failed import gobject._gobject /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: specified class size for typePyGtkGenericCellRenderer' is smaller than the parent type's GtkCellRenderer' class size from gtk import _gtk /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_type_get_qdata: assertionnode != NULL' failed from gtk import _gtk

The application won't start.

But if I want to run the following python-application

 import sys
 import pynotify

 if __name__ == "__main__":
if not pynotify.init("icon-summary-body"):

n = pynotify.Notification(
    "Hello notify! It works!",

e.g. by saving the code in a filename "notify.py", I am able to run the code with the command in terminal:

python notify.py

and the notification works fine!

What is the problem with the via quickly created python applicaton?? Why is the import not working?? I am new with quickly and python.


I just ran into exactly the same problem.

Here's my solution.

from gi.repository import Notify

Notify.init ('Application')
notification = Notify.Notification.new ('Title', 'Message', 'dialog-information')
notification.show ()
  • Thanks! This works fine for me! (Do you additionally know how to show an individually icon from the quickly "media"-folder instead of the standard "dialog-information"-Icon?) – Marian Lux Jun 26 '12 at 13:18
  • I'd imagine you could just point it to the file. – RobinJ Jun 26 '12 at 13:24
  • os.getcwd() + '/data/media/picture.png' works for me! I hope it works also after packaging. I don't understand why './data/media/picture.png' is not working. – Marian Lux Jun 26 '12 at 13:37
  • Because the file is in the bin directory, probably. – RobinJ Jun 26 '12 at 13:39

pynotify was written to work with pygtk, an older way of using GTK through Python. The new method is called gobject introspection, and has imports like:

from gi.repository import Gtk

You can't use the old and the new system in the same application, and the quickly template uses the new system, so you can't use pynotify with it.

I have a replacement that's compatible with the new system: notify2. It's not in precise yet, but I've submitted a backport request for it.

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