gnome-tweak-tool import gi error

Hi! After upgrade from F17 to F18 i cant start gnome-tweak-tool....:dis:
gnome-tweak-tool :

Traceback (most recent call last):
File "/usr/bin/gnome-tweak-tool", line 22, in <module>
import gi
File "/usr/lib64/python2.7/site-packages/gi/__init__.py", line 27, in <module>
from gi.repository import GObject
File "/usr/lib64/python2.7/site-packages/gi/importer.py", line 76, in load_module
dynamic_module._load()
File "/usr/lib64/python2.7/site-packages/gi/module.py", line 240, in _load
version = gi.get_required_version(self._namespace)
AttributeError: 'module' object has no attribute 'get_required_version'

From terminal:
>>> python
>>> import gi
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib64/python2.7/site-packages/gi/__init__.py", line 32, in <module>
gi # pyflakes
NameError: name 'gi' is not defined

My system
which python: /usr/bin/python
python version 2.7.3
uname -r
3.8.4-202.fc18.x86_64
I have install all gobject libraries...

Any help please???:)