title: How to read a long Excel file using openpyxl?
body: <p>I am trying to print out the number of duplicates per cell in a column. For example:</p>
  
  <pre><code> Jan-06-12  = 6
   Fen-06-12  = 10
  </code></pre>
  
  <p>?   No idea how to do that..all I did was print out the whole column onto IDLE.</p>
  
  <pre><code>wb = load_workbook(filename = r'GenieSales.xlsx', use_iterators = True)
  count = 0
  ws = wb.get_sheet_by_name(name = 'Sheet1')
  for column in ws.iter_rows(range_string =('I2:I51509')): # it brings a new method: iter_rows()
      for cell in column:
          print cell.internal_value
  
  
  #print sheet_ranges['I2'].value # D18
  #if sheet_ranges['I'].value == 'Jan-06-12':
  #    print '1'
  </code></pre>