title: Cannot compare type 'Timestamp' with type 'int'
body: <p>When running the following code:</p>
  
  <pre><code>for row,hit in hits.iterrows():
      forwardRows = data[data.index.values &gt; row];
  </code></pre>
  
  <p>I get this error:</p>
  
  <pre><code>TypeError: Cannot compare type 'Timestamp' with type 'int'
  </code></pre>
  
  <p>If I look into what is being compared here I have these variables:</p>
  
  <pre><code>type(row)
  pandas.tslib.Timestamp
  
  row
  Timestamp('2015-09-01 09:30:00')
  </code></pre>
  
  <p>is being compared with:</p>
  
  <pre><code>type(data.index.values[0])
  numpy.datetime64
  
  data.index.values[0]
  numpy.datetime64('2015-09-01T10:30:00.000000000+0100')
  </code></pre>
  
  <p>I would like to understand whether this is something that can be easily fixed or should I upload a subset of my data?  thanks</p>