error using ete3 in python: 'No module name cPickle'
<p>I'm having a problem similar to:
<a href="https://stackoverflow.com/questions/32679476/theano-import-error-no-module-named-cpickle">Theano import error: No module named cPickle</a></p>

<p>But with using ete3 (www.etetoolkit.org). I downgraded to ete2 and the problem disappeared, but would like to be using the functionality in ete3.</p>

<p>Following after the comments in the related stackoverflow post above, i've upgraded to the newest version of 'six' (1.10.0), but still have this error message:</p>

<pre><code>Traceback (most recent call last):
  File "treebuilder.py", line 7, in &lt;module&gt;
    from ete3 import *
  File "/Library/Python/2.7/site-packages/ete3/__init__.py", line 56, in &lt;module&gt;
    from .webplugin.webapp import *
  File "/Library/Python/2.7/site-packages/ete3/webplugin/webapp.py", line 46, in &lt;module&gt;
    import six.moves.cPickle
ImportError: No module named cPickle
</code></pre>

<p>and, when I try to install cPickle (using sudo and -H), I get:</p>

<pre><code>Collecting cPickle
/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
  Could not find a version that satisfies the requirement cPickle (from versions: )
No matching distribution found for cPickle
/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
</code></pre>

<p>How could I resolve this problem?</p>