title: How to convert numpy datetime64 into datetime
body: <p>I basically face the same problem posted here:<a href="https://stackoverflow.com/questions/13703720/converting-between-datetime-timestamp-and-datetime64">Converting between datetime, Timestamp and datetime64</a></p>
  
  <p>but I couldn't find satisfying answer from it, my question how to extract datetime from numpy.datetime64 type:</p>
  
  <p>if I try:</p>
  
  <pre><code>np.datetime64('2012-06-18T02:00:05.453000000-0400').astype(datetime.datetime)
  </code></pre>
  
  <p>it gave me:
       1339999205453000000L</p>
  
  <p>my current solution is convert datetime64 into a string and then turn to datetime again. but it seems quite a silly method.</p>