title: Transition from Python2.4 to Python2.6 on CentOS, module migration problem
body: <p>I have a problem of upgrading python from 2.4 to 2.6:</p>
  <p>I have CentOS 5 (Full). It has python 2.4 living in /usr/lib/python2.4/ . Additional modules are living in /usr/lib/python2.4/site-packages/ . I've built python 2.6 from sources at /usr/local/lib/python2.6/  . I've set default python to python2.6 . Now old modules for 2.4 are out of pythonpath and are &quot;lost&quot;. In particular, yum is broken (&quot;no module named yum&quot;).</p>
  <p>So what is the right way to migrate/install modules to python2.6?</p>