مشکل با yum

[hossein1365]

بزن
yum update yum

این خروجی برنامه

Traceback (most recent call last):
File "/usr/bin/yum", line 4, in ?
import yum
File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 49, in ?
import config
File "/usr/lib/python2.4/site-packages/yum/config.py", line 27, in ?
from parser import ConfigPreProcessor
File "/usr/lib/python2.4/site-packages/yum/parser.py", line 3, in ?
import urlgrabber
File "/usr/lib/python2.4/site-packages/urlgrabber/__init__.py", line 53, in ?
from grabber import urlgrab, urlopen, urlread
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 406, in ?
import keepalive
File "/usr/lib/python2.4/site-packages/urlgrabber/keepalive.py", line 339, in ?
class HTTPSHandler(KeepAliveHandler, urllib2.HTTPSHandler):
AttributeError: 'module' object has no attribute 'HTTPSHandler'