title: Differente Betweent Dates - Integer results
body: <p>I need to calculate the difference between two columns of type datetime, and the result must be in days (integer format). However, what I am getting is the result in day / month / year hour and minute.</p>
  
  <pre><code>    id                  date_1      date_2              date_3                  date_result_2-1     date_result_3-1
  0   C_ID_92a2005557     2017-06-01  2017-06-27 14:18:08 2018-04-29 11:23:05     26 days 14:18:08    332 days 11:23:05
  1   C_ID_3d0044924f     2017-01-01  2017-01-06 16:29:42 2018-03-30 06:48:26     5 days 16:29:42     453 days 06:48:26
  2   C_ID_d639edf6cd     2016-08-01  2017-01-11 08:21:22 2018-04-28 17:43:11     163 days 08:21:22   635 days 17:43:11
  3   C_ID_186d6a6901     2017-09-01  2017-09-26 16:22:21 2018-04-18 11:00:11     25 days 16:22:21    229 days 11:00:11
  4   C_ID_cdbd2c0db2     2017-11-01  2017-11-12 00:00:00 2018-04-28 18:50:25     11 days 00:00:00    178 days 18:50:25
  </code></pre>
  
  <p>The last two columns are the result that I obtained with the simple subtraction between two columns. I would like these columns to be in full format, containing only the number of days.</p>
  
  <p>I tried to convert with astype (int) but I got a result that I could not understand.</p>
  
  <p>Any suggestion? Thank you very much in advance.</p>