title: Pandas to_datetime is not formatting the datetime value in the desired format (dd/mm/YYYY HH:MM:SS AM/PM)
body: <p>I have the datetime values in the following format</p>
  <pre><code>    2017-09-11 01:18:38
      2017-09-11 01:34:30
      2017-09-11 05:03:57
      2017-09-11 09:55:48
      2017-09-11 09:59:10
      2017-09-11 12:09:05
  </code></pre>
  <p>I have to display the values in the format dd/mm/YYYY HH:MM:SS AM/PM:</p>
  <pre><code>    11/09/2017  01:18:38 AM
      11/09/2017  01:34:30 AM
      11/09/2017  05:03:57 AM
      11/09/2017  09:55:48 AM
      11/09/2017  09:59:10 AM
      11/09/2017  12:09:05 PM
      11/09/2017  12:08:16 PM
  </code></pre>
  <p>I am using the following code to do that , however it doesnt change the format</p>
  <pre><code>data_f1['Reported Date'] = pd.to_datetime(data_f1['Reported Date'], 
     format=&quot;%m/%d/%Y %I:%M:%S %p&quot;)
  </code></pre>