yum fails with traceback "AttributeError: 'module' object has no attribute 'HTTPSHandler'"

Issue

• yum generates the follow traceback:

  # yum 
  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 412, 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'