title: How do I install pxssh? Module not found
body: <p>I get the error message module not found for pxssh.</p>
  
  <p>I am running ubuntu 16.04 with Python 2.7.12 with expect 4.0.1-1.</p>
  
  <pre><code>import pxssh
  ImportError: No module named pxssh
  </code></pre>
  
  <p>Is pxssh included in pexpect</p>