title: In Memory CSV download file name
body: <p>I am using csv writer to create a csv in memory and returning it as a response using django.</p>
  
  <p>My code looks like this.</p>
  
  <pre><code>response = HttpResponse (content_type='text/csv')
  writer = csv.writer(response)
  writer.writerow(['rizwan','mumtaz'])
  ......
  return response
  </code></pre>
  
  <p>The code is working fine, but every time I get <code>'download.csv'</code> how can I change the name <code>'download.csv'</code> to <code>somethigelse.csv</code></p>