title: Joining a list of string digits to create an integer Python 3
body: <p>How can I convert this:</p>
  
  <pre><code>['2', '3', '1', '4', '1', '4', '2', '3', '3', '2', '4', '1', '4', '1', '3', '2']
  </code></pre>
  
  <p>into this</p>
  
  <pre><code>2314142332414132
  </code></pre>
  
  <p>I've tried using the .join method, but I'm quite new to Python and need some help using it. I've also tried working with re.sub, string.replace, but none of them worked. Any help?</p>