title: How to convert all possible types of datetime formats using python module
body: <p>Is it possible to convert all possible types of datetime formats to '<code>%Y-%m-%d %H:%M:%S</code>' without error.</p>
  
  <p>For example, '<code>2016-01-21 12:36:59.124</code>' or '<code>2016-Jan-12 21:36:12' or '16-January-23 23:59:32.1</code>should be converted to <code>%Y-%m-%d %H:%M:%S</code> format without raising any error?</p>