title: Anaconda CDH Parcel upgrade Python to 3.5
body: <p>I am currently using the Anaconda CDH parcel which is of Python 2.7.  I would like to upgrade it to Python 3.5.</p>
  
  <p>I found some tutorials saying that Python version can be upgraded by using this command <code>conda install python=3.5</code>.  However, I found the below error when running this command.</p>
  
  <pre><code>[root@host ~]# conda install python=3.5
  Fetching package metadata ...Could not connect to https://repo.continuum.io/pkgs/free/linux-64/
  Could not connect to https://repo.continuum.io/pkgs/pro/linux-64/...
  Could not connect to https://repo.continuum.io/pkgs/free/noarch/
  Could not connect to https://repo.continuum.io/pkgs/pro/noarch/...
  Solving package specifications: ....
  
  The following specifications were found to be in conflict:
    - enum34 -&gt; python 2.6*|2.7*|3.3*
    - python 3.5*
  Use "conda info &lt;package&gt;" to see the dependencies for each package.
  </code></pre>
  
  <p>I would like to ask if this is related to the network constraint of the host or the package problem.</p>
  
  <p>Thanks in advance.</p>
  
  <p>Best regards,
  Ruka</p>