title: How can I verify if one list is a subset of another?
body: <p>I need to verify if a list is a subset of another - a boolean return is all I seek. </p>
  
  <p>Is testing equality on the smaller list after an intersection the fastest way to do this? Performance is of utmost importance given the number of datasets that need to be compared.</p>
  
  <p>Adding further facts based on discussions:  </p>
  
  <ol>
  <li><p>Will either of the lists be the same for many tests?  It does as one of them is a static lookup table.</p></li>
  <li><p>Does it need to be a list? It does not - the static lookup table can be anything that performs best. The dynamic one is a dict from which we extract the keys to perform a static lookup on.     </p></li>
  </ol>
  
  <p>What would be the optimal solution given the scenario?</p>