regen_repodata.py fails with the error : "xmlrpclib.Fault: <Fault -1: "While running 'auth.login': caught\nserver.apacheRequest.UnknownXML : Invalid request received (class xmlrpc.auth is not defined (function = login)).\n">"

Issue

regen_repodata.py fails with the error similar to below :

[root@usr ~]# ./regen_repodata.py --force --cleandb --channel="rhel-x86_64-server-6"
enter the satellite url, such as https://satellite.example.com/rpc/api
https://satellite.redhat.com/XMLRPC
Login details for https://satellite.redhat.com/XMLRPC

Login: user
Password:

Traceback (most recent call last):
  File "./regen_repodata.py", line 210, in ?
    main()
  File "./regen_repodata.py", line 195, in main
    key = session_init()
  File "./regen_repodata.py", line 55, in session_init
    key = client.auth.login(SATELLITE_LOGIN, SATELLITE_PASSWORD)
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1096, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1383, in __request
    verbose=self.__verbose
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1147, in request
    return self._parse_response(h.getfile(), sock)
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1286, in _parse_response
    return u.close()
  File "/usr/lib64/python2.4/xmlrpclib.py", line 744, in close
    raise Fault(**self._stack[0])
xmlrpclib.Fault: <Fault -1: "While running 'auth.login': caught\nserver.apacheRequest.UnknownXML : Invalid request received (class xmlrpc.auth is not defined (function = login)).\n">
[root@usqrhs1 ~]#