title: Adding an array of seconds to a reference datetime
body: <p>How do I add an array of seconds to a reference datetime in python e.g:</p>
  
  <pre><code>ref_time = datetime.datetime(year=2017, month=6, day=5, hour=10, minute=30, second=30)
  
  secs = (0,1,2,3,4,5,6,7,8,9,10)
  </code></pre>
  
  <p>The result needs to be something:</p>
  
  <p>2017,6,5,10,30,30</p>
  
  <p>2017,6,5,10,30,31</p>
  
  <p>2017,6,5,10,30,32</p>
  
  <p>2017,6,5,10,30,33 
     etc etc</p>
  
  <p>I have tried this but its not working, what am I doing wrong?</p>
  
  <pre><code>d = datetime.timedelta(seconds=np.int(secs))
  new_timestamp = timestamp+d
  </code></pre>
  
  <p>Sorry for the simple question, i'm quite new to python </p>