Gtk.TreeModelSort does not init properly

[Sean Davis]

In python-gi, attempting to use Gtk.TreeModelSort(child_model), raises TypeError, saying it takes no arguments. This is incorrect. Gtk.TreeModelSort uses a child model as its argument.

This works correctly in both quantal and raring, but not precise. The init api is still the same from pyGTK... http://www.pygtk.org/docs/pygtk/class-gtktreemodelsort.html

Example code:

from gi.repository import Gtk

model = Gtk.ListStore(GdkPixbuf.Pixbuf, str, str, str, float, str, bool, bool)
sort = Gtk.TreeModelSort(model)

Raises:
TypeError: GObject.__init__() takes exactly 0 arguments (1 given)

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: python-gi 3.2.2-1~precise
ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35
Uname: Linux 3.2.0-37-generic i686
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: i386
Date: Sun Feb 3 10:48:09 2013
InstallationMedia: Xubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120817.3)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pygobject
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Liviu Andronic (landronimirc)]

Concerning catfish, here it fails to run with the following message:
liv@malou-laptop:~$ catfish
python: can't open file 'bin/catfish.py': [Errno 2] No such file or directory

Would it help if I backported python-gi to work around this issue?

[Martin Pitt (pitti)]

This has been fixed upstream in 3.3.90, thus is fixed in Ubuntu Quantal and Raring.

[Sean Davis (bluesabre)]

Hi Martin, is it possible to make a patch available in precise? Surely this is not the only python-gtk3 application that uses a sortable treeview.

[Martin Pitt (pitti)]

Do we have any package in Ubuntu 12.04 which is broken by this? For application developers there is always the better way of calling Gtk.TreeModelSort(model=your_model) or Gtk.TreeModelSort.new_with_model(your_model), both of which are the official API. The new override in Quantal is merely a workaround to provide backwards compatibility to the old pygtk, but is not the API as offered by introspection or GTK.

[Sean Davis (bluesabre)]

Oh, I somehow missed that. Yes, that does indeed work in precise as well. Thanks for your help Martin!