title: Need to remove None from the list
body: <p>I have excel having column names in the first row. I need to read it without <code>None</code>:</p>
  
  <pre><code>a = [Sheet.UsedRange.Rows(1).Value]
  [((u'Step', u'Test Case ID', u'Traceability  Ref', u'Test Description', u'Display', u'Test conditions', None, None, None, None, None, u'Test Criteria', u'Delay Time(ms)', u'Capture Time(ms)', u'Automation Type(A/S)', u'Expected Output', None, None, None, u'Actual Output', u'Comments'),)]
  </code></pre>
  
  <p>I tired using filter:</p>
  
  <pre><code>a = filter(None, a)
  </code></pre>
  
  <p>I need to remove the <code>None</code> (which is the empty column in my excel).</p>