title: Installing Ipython throws error about setuptools
body: <p>I have installed <code>pip</code> and <code>setuptools</code> installed on my Mac with <code>pip</code>. While I am installing <code>Ipython</code> with commands: <code>sudo install ipython</code>,Errors following:<a href="http://paste.ubuntu.com/15413863/" rel="nofollow">Link</a>. I have tried these commands: <code>sudo -H pip install ipython --ignore-installed setuptools-1.1.6
  </code>,it also came out errors: <code>Could not find a version that satisfies the requirement setuptools-1.1.6 (from versions: ) No matching distribution found for setuptools-1.1.6</code>.
  I have googled similar problems,but haven't solved it. Thanks for help.</p>