title: Update python to a specific version using conda
body: <p>Currently I have anaconda3 installed in my server with the following version:</p>
  
  <p>Python 3.4.3 |Anaconda 2.3.0 (64-bit)</p>
  
  <p>I want to update the Python to Python 3.5.1.</p>
  
  <p>I know that <code>conda update python</code> updates python to latest version, but I want to update it to only 3.5.1.  What will be the command for it?</p>