title: How to sort comma separated words in Vim
body: <p>In Python code, I frequently run into import statements like this:</p>
  
  <pre><code>from foo import ppp, zzz, abc
  </code></pre>
  
  <p>Is there any Vim trick, like <code>:sort</code> for lines, to sort to this:</p>
  
  <pre><code>from foo import abc, ppp, zzz
  </code></pre>