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我遇到了类似的问题： Theano 导入错误：没有名为 cPickle 的模块

但是使用 ete3 (www.etetoolkit.org)。我降级到 ete2 并且问题消失了，但想使用 ete3 中的功能。

在上面相关stackoverflow帖子中的评论之后，我已经升级到最新版本的'six'（1.10.0），但仍然有这个错误消息：

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

而且，当我尝试安装 cPickle（使用 sudo 和 -H）时，我得到：

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

我该如何解决这个问题？

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