title: How to convert "0 days 00:09:06.633000000" object to minutes/hours/seconds?
body: <p>I was working with some data in pandas as after saving it to <code>csv</code> it changed the format from <code>00:31:24.904000</code> <code>timedelta64[ns]</code> to <code>0 days 00:31:24.904000</code> <code>Object</code>. </p>
  
  <pre><code>0       0 days 00:25:20.835688000
  1       0 days 00:01:44.004000000
  2       0 days 00:18:29.023000000
  3       0 days 00:09:06.633000000
  4       0 days 00:02:16.826000000
                    ...            
  6004    0 days 00:00:00.000000000
  6005    0 days 00:31:24.904000000
  6006    0 days 00:02:31.637000000
  6007    0 days 00:03:40.214000000
  6008    0 days 00:01:26.577000000
  Name: Time, Length: 6009, dtype: object
  </code></pre>
  
  <p>How can I convert it back to timedelta or some other date/time related format?
  How can I avoid such conversion during saving to csv</p>