title: unittest installation error Could not find a version that satisfies the requirement
body: <p>Could someone please help me with this error message:</p>
  
  <pre><code>Could not find a version that satisfies the requirement unittest
  </code></pre>
  
  <p>I installed the latest <code>Python</code> and <code>PyCharm</code> and try to install the package <code>unittest</code> but get the above error. So far my experience with <code>Python</code> is a bit like dll hell ...</p>