title: How to sort a version list?
body: <p>I have a method that list some versions of an application on my computer, the list following has this format and the content are strings:</p>
  
  <pre class="lang-none prettyprint-override"><code>['1.15.1.23', '1.10.1.34', '1.9.2.3', ...]
  </code></pre>
  
  <p>When I call <code>sorted(mylist)</code>, the output does not appear to sort some items, I'm getting this:</p>
  
  <pre class="lang-none prettyprint-override"><code>['1.15.1.51', '1.15.1.9', '1.15.2.11', '1.15.2.6']
  </code></pre>
  
  <p>What I'm doing wrong? I expected the output as:</p>
  
  <pre class="lang-none prettyprint-override"><code>['1.15.1.9', '1.15.1.51', '1.15.2.6', '1.15.2.11']
  </code></pre>