Installation problem with 0.7.8


I am trying to install chef today and I got the following error when running

chef-solo -c /etc/chef/solo.rb -j /etc/chef/chef.json -r

[Wed, 19 Aug 2009 12:48:14 -0400] ERROR: package[rubygem-chef-server-slice]
(/tmp/chef-solo/cookbooks/chef/recipes/server.rb line 52) had an error:
yum failed - #<Process::Status: pid=18313,exited(2)> - returns: python: can’t
open file
[Errno 2] No such file or directory

seems like its looking for /usr/lib/ruby/gems/1.8/gems/chef-0.7.4/ which may
really be /usr/lib/ruby/gems/1.8/gems/chef-0.7.8/

what should I do to deal with the issue?