title: Need python 2.7+ but default on system is 2.6
body: <p>I downloaded some tools which use python scripts to work. It seems I need python 2.7+ to be able to run the scripts, the default installed is 2.6 and I am getting this error:</p>
  
  <pre><code>AttributeError: 'module' object has no attribute 'check_output'
  </code></pre>
  
  <p>So, I downloaded and installed python 2.7, however I still get the same error. Looks like both versions are separate, rather than 2.7 just being an update, and 2.6 is still the default.</p>
  
  <pre><code># python --version
  Python 2.6.6
  # python2.7 --version
  Python 2.7.10
  </code></pre>
  
  <p>I can't see any way to run the scripts directly and not sure how else to resolve this. Using RHEL6</p>