title: Dedupe and sort a list in Python 2.2
body: <p>In Python <strong>2.2</strong> (don't ask), what's the neatest way to sort a list and remove duplicates?</p>
  
  <p>I can obviously write a function that would <code>sort()</code> then iterate, but am wondering if there's an idiomatic one-liner.</p>
  
  <p><strong>edit:</strong> The list is short, so efficiency is not a concern. Also, the elements are immutable.</p>