title: Convert a string with 'YYYYMMDDHHMMSS' format to datetime
body: <p>I recognize there has been many questions posted about converting strings to <code>datetime</code> already but I haven't found anything for converting a string like <code>20120225143620</code> which includes seconds.</p>
  
  <p>I was trying to perform a clean conversion without substring-ing each segment out and concatenating with <code>/</code> and <code>:</code>.  </p>
  
  <p>Does anyone have any suggestions?</p>