title: Can't install elementtree with pip
body: <p>Trying to install <code>elementtree</code> package with <code>pip</code>. Getting the following error:</p>
  
  <pre><code>    (taximachine_env)vagrant@dev-gm:/opt/taxi/taxiconsole$ pip install elementtree -vvv
  Collecting elementtree
    Getting page https://pypi.python.org/simple/elementtree/
    1 location(s) to search for versions of elementtree:
    * https://pypi.python.org/simple/elementtree/
    Getting page https://pypi.python.org/simple/elementtree/
    Analyzing links from page https://pypi.python.org/simple/elementtree/
    Could not find a version that satisfies the requirement elementtree (from versions: )
  Cleaning up...
  No matching distribution found for elementtree
  Exception information:
  Traceback (most recent call last):
    File "/opt/taxi/envs/taximachine_env/local/lib/python2.7/site-packages/pip/basecommand.py", line 211, in main
      status = self.run(options, args)
    File "/opt/taxi/envs/taximachine_env/local/lib/python2.7/site-packages/pip/commands/install.py", line 294, in run
      requirement_set.prepare_files(finder)
    File "/opt/taxi/envs/taximachine_env/local/lib/python2.7/site-packages/pip/req/req_set.py", line 334, in prepare_files
      functools.partial(self._prepare_file, finder))
    File "/opt/taxi/envs/taximachine_env/local/lib/python2.7/site-packages/pip/req/req_set.py", line 321, in _walk_req_to_install
      more_reqs = handler(req_to_install)
    File "/opt/taxi/envs/taximachine_env/local/lib/python2.7/site-packages/pip/req/req_set.py", line 461, in _prepare_file
      req_to_install.populate_link(finder, self.upgrade)
    File "/opt/taxi/envs/taximachine_env/local/lib/python2.7/site-packages/pip/req/req_install.py", line 250, in populate_link
      self.link = finder.find_requirement(self, upgrade)
    File "/opt/taxi/envs/taximachine_env/local/lib/python2.7/site-packages/pip/index.py", line 571, in find_requirement
      'No matching distribution found for %s' % req
  DistributionNotFound: No matching distribution found for elementtree
  </code></pre>
  
  <p>PyPI <a href="https://pypi.python.org/simple/elementtree/" rel="noreferrer">link</a> returns the following response:
      </p>
  
  <pre><code>&lt;head&gt;
      &lt;title&gt;Links for elementtree&lt;/title&gt;
      &lt;meta name="api-version" value="2"&gt;
      &lt;style type="text/css"&gt;&lt;/style&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
      &lt;h1&gt;Links for elementtree&lt;/h1&gt;
  &lt;/body&gt;
  
  &lt;/html&gt;
  </code></pre>
  
  <p>Is there any other way to install <code>elementtree</code>?</p>