title: Django import export How to export just one object with selective columns
body: <p>I have a model in which there are only aggregates of the values imported</p>
  
  <pre><code>class AggregateImport(models.Model):
  Price = models.IntegerField
  Total_Price = models.IntegerField
  Collected_Date = models.Charfield(max_length=15)
  </code></pre>
  
  <p>Now import file only has price and collected date (40 rows) in it but I only want to export the total price</p>