title: creating nested tables in python tabulate
body: <p>I want to create a LaTeX table as follows in python:</p>
  
  <pre><code>duck    small    dog    small
          medium          medium
          large           large
  </code></pre>
  
  <p>how would I do that?</p>
  
  <p>The list I have looks like:</p>
  
  <pre><code>lis=['dog',['small','medium','large],'duck',['small','medium','large']]
  </code></pre>