I am not sure about the status of the bug. But I have go an work around. This is
from Fedora forum Thread : 
http://www.fedoraforum.org/forum/showthread.php?t=176323&highlight=pirut+crash

The work around is : 
root has to edit the file /usr/lib/yum-plugins/priorities.py by changing the
line #88 (if opts.samearch:) to ' if opts and opts.samearch: '
 and then do 'chcon -t lib_t /usr/lib/yum-plugins/priorities.py' if SELinux is
activated.

NB : in installation of fedora 8 'rpm -q  pirut' shows i have pirut-1.3.28-1.fc8
installed.




(In reply to comment #0)
> From Bugzilla Helper:
> User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.10)
Gecko/20071213 Fedora/2.0.0.10-3.fc8 Firefox/2.0.0.10
> 
> Description of problem:
> Component: pirut
> Summary: TBaa979ac4 priorities.py:88:exclude_hook:AttributeError: 'NoneType'
object has no attribute 'samearch'
> 
> Traceback (most recent call last):
>   File "/usr/sbin/pirut", line 483, in <module>
>     main()
>   File "/usr/sbin/pirut", line 479, in main
>     pm.run()
>   File "/usr/sbin/pirut", line 407, in run
>     self.doRefresh()
>   File "/usr/sbin/pirut", line 423, in doRefresh
>     self.doRefreshRepos(self._onlyrepo)
>   File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 339, in
doRefreshRepos
>     self.reposSetup(pbar, thisrepo)
>   File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 303, in
reposSetup
>     self.doTsSetup()
>   File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 72, in doTsSetup
>     return self._getTs()
>   File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 85, in _getTs
>     self._getTsInfo()
>   File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 91, in _getTsInfo
>     self._tsInfo.setDatabases(self.rpmdb, self.pkgSack)
>   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 529, in <lambda>
>     pkgSack = property(fget=lambda self: self._getSacks(),
>   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 396, in _getSacks
>     self.plugins.run('exclude')
>   File "/usr/lib/python2.5/site-packages/yum/plugins.py", line 169, in run
>     func(conduitcls(self, self.base, conf, **kwargs))
>   File "/usr/lib/yum-plugins/priorities.py", line 88, in exclude_hook
>     if opts.samearch:
> AttributeError: 'NoneType' object has no attribute 'samearch'
> 
> Local variables in innermost frame:
> conduit: <yum.plugins.MainPluginConduit instance at 0xa2b2f4c>
> commands: None
> opts: None
> 
> 
> Version-Release number of selected component (if applicable):
> pirut-1.3.28-1.fc8
> 
> How reproducible:
> Always
> 
> 
> Steps to Reproduce:
> 1. Just start Add/Remove Software from Applications menu
> 2.
> 3.
> 
> Actual Results:
> It shows a Error Message: Exception Occurred. with a bug report ( that I
placed in Description section above). I can only then three options to do :
'Debug', 'Save to File' and 'Quit'. If I choose 'Debug' then nothing happens and
just the program (pirut) exits. if I choose 'Save to File' I can then Save the
'crash dump' info and lastly choosing 'Quit' obviously quits the program
Add/Remove Software (pirut). Also Importantly now my Automatic software update
(pup) does not work. It also shows the same error 'unhandled exception has
occurred' with the same (!!!) 'crash dump' info. But there is no problem with
YUM UPDATE. yum works fine!!!
> 
> Expected Results:
> Add/Remove Software (pirut) should start and let me Add/Remove some software
from by fedora 8 installation.
> 
> Additional info:
> Component: pirut
> Summary: TBaa979ac4 priorities.py:88:exclude_hook:AttributeError: 'NoneType'
object has no attribute 'samearch'
> 
> Traceback (most recent call last):
>   File "/usr/sbin/pirut", line 483, in <module>
>     main()
>   File "/usr/sbin/pirut", line 479, in main
>     pm.run()
>   File "/usr/sbin/pirut", line 407, in run
>     self.doRefresh()
>   File "/usr/sbin/pirut", line 423, in doRefresh
>     self.doRefreshRepos(self._onlyrepo)
>   File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 339, in
doRefreshRepos
>     self.reposSetup(pbar, thisrepo)
>   File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 303, in
reposSetup
>     self.doTsSetup()
>   File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 72, in doTsSetup
>     return self._getTs()
>   File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 85, in _getTs
>     self._getTsInfo()
>   File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 91, in _getTsInfo
>     self._tsInfo.setDatabases(self.rpmdb, self.pkgSack)
>   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 529, in <lambda>
>     pkgSack = property(fget=lambda self: self._getSacks(),
>   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 396, in _getSacks
>     self.plugins.run('exclude')
>   File "/usr/lib/python2.5/site-packages/yum/plugins.py", line 169, in run
>     func(conduitcls(self, self.base, conf, **kwargs))
>   File "/usr/lib/yum-plugins/priorities.py", line 88, in exclude_hook
>     if opts.samearch:
> AttributeError: 'NoneType' object has no attribute 'samearch'
> 
> Local variables in innermost frame:
> conduit: <yum.plugins.MainPluginConduit instance at 0xa2b2f4c>
> commands: None
> opts: None

*** This bug has been marked as a duplicate of 421961 ***