When I am upgrading my Fedora 10 to Fedora rawhide, my desktop was locked. Then I restart the computer, rerun the yum upgrade. some error like the following comes out.
-------------------------
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

No module named rpm

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.5 (r25:51908, Apr 10 2007, 10:29:13)
[GCC 4.1.2 20070403 (Red Hat 4.1.2-8)]

If you cannot solve this problem yourself, please go to
the yum faq at:
http://wiki.linux.duke.edu/YumFaq
-------------------------
someone in fedoraforum said to reinstall yum and python, but i found it didn't work well.

then i try uninstall some yum plugin such as yum-metadata-parser, then the error mesage becomes
--------------
No module named iniparser
--------------
it seems that the error comes from here.
then i find a package called python-iniparser is out of date. so i download it by hand and update it.
try to yum upgrade again, it works! everything comes to there original way.

after all, you just need to reinstall 2 packages: yum-metadata-parser and python-iniparser.

--
Liu Lantao
College of Information Science and Technology, Beijing Normal University
EMAIL: liulantao ( at ) gmail ( dot ) com ;
WEBSITE: http://www.liulantao.com/ .
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