yum Installer Times Exception UnicodeDecodeError

Traceback (most recent call last):
 File "/usr/bin/ yum", line 29, in 
 yummain.user_main(sys.argv[1:], exit_code=True)
 File "/usr/share/yum-cli/yummain.py", line 285, in user_main
 errcode = main(args)
 File "/usr/share/yum-cli/yummain.py", line 219, in main
 return_code = base.doTransaction( )
 File "/usr/share/yum-cli/cli.py", line 586, in doTransaction
 resultobject = self.runTransaction(cb=cb)
 File "/usr/lib /python2.6/site-packages/yum/__init__.py", line 1505, in runTransaction
 self._store_config_in_history()
 File "/usr/lib/python2.6/site-packages/yum /__init__.py", line 5230, in _store_config_in_history
 myrepos += repo.dump()
 File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 395, in dump
 output = output +'%s = %s
'% (attr, res)
UnicodeDecodeError:'ascii' codec can't d ecode byte 0xe2 in position 497: ordinal not in range(128)

solution

1. Create a new python file

vi /usr/lib/python2.6/site-packages/sitecustomize.py

2. File content

import sys 

sys.setdefaultencoding('UTF-8')

3. Reinstallation, problem solved