Re: ERROR:root:Requiring namespace 'Gtk' version '2.0', but '3.0' is already loaded

[Robert Park <rbpark exolucere ca>]

On Wed, Nov 17, 2010 at 10:06 AM, John Palmieri <johnp redhat com> wrote:
> On your other issue, require_version is a static method, not something that is introspected.  Are you sure you aren't importing gtk (the static bindings) somewhere?  Whenever attrs are missing that is usually the cause.  We really should get around to checking for that.  The most common reason for this issue is a module like libchamplain-python importing it.

I do have libchamplain-python installed, is that breaking things? I
tried uninstalling it, and my program ran, but I still experienced a
segfault after a while (although it did seem like it took slightly
longer to trigger the segfault).

$ ./gottengeography.py

(gottengeography.py:5122): ClutterGLX-CRITICAL **: Unable to make the
stage window 0x4800008 the current GLX drawable

** (gottengeography.py:5122): CRITICAL **:
champlain_map_source_fill_tile: assertion `CHAMPLAIN_IS_MAP_SOURCE
(map_source)' failed
/usr/lib64/python2.7/site-packages/gtk-2.0/gi/types.py:40: Warning:
g_object_unref: assertion `G_IS_OBJECT (object)' failed
  return info.invoke(*args)

** (gottengeography.py:5122): CRITICAL **:
champlain_map_source_fill_tile: assertion `CHAMPLAIN_IS_MAP_SOURCE
(map_source)' failed

** (gottengeography.py:5122): CRITICAL **:
champlain_map_source_fill_tile: assertion `CHAMPLAIN_IS_MAP_SOURCE
(map_source)' failed
Segmentation fault (core dumped)

You can look at my code right here:

https://github.com/robru/GottenGeography/blob/master/gottengeography.py

I'm not explicitly importing any static bindings anywhere, all the
imports are right at the beginning there. If libchamplain is importing
the static bindings, I'm not sure how I'd get it to stop (I wasn't
able to get your example of using GtkClutter instead of GtkChamplain
working). Also, there's this:

 $ python
Python 2.7 (r27:82500, Sep 16 2010, 18:02:00)
[GCC 4.5.1 20100907 (Red Hat 4.5.1-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from gi.repository import Gtk
>>> Gtk.require_version('2.0')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.7/site-packages/gtk-2.0/gi/module.py", line
212, in __getattr__
    attribute = getattr(self._dynamic_module, name)
  File "/usr/lib64/python2.7/site-packages/gtk-2.0/gi/module.py", line
88, in __getattr__
    self.__class__.__name__, name))
AttributeError: 'DynamicModule' object has no attribute 'require_version'
>>>

This indicates to me that something is broken with the way Gtk ships
on Fedora 14. Or at least with the particular set of packages I have
installed. Do you have any insight into which packages I should have
and which I don't? When I was installing F14 I installed a lot of
packages that looked like they would be necessary, such as
libchamplain-python, but that turned out to not be necessary at all. I
wonder what other packages have important sounding names that I
installed unnecessarily. Could they be breaking things subtly?

Thanks.

-- 
http://exolucere.ca