title: What is Jython and is it useful at all?
body: <p>I know Python, but what is Jython?</p>
  
  <ul>
  <li>When will I need Jython?</li>
  <li>What are the drawbacks?</li>
  <li>I assume it is slow?</li>
  </ul>
  
  <p>Please detail it out! thanks.</p>