title: get local path of an uploaded file in django
body: <p>I want to open an uploaded csv file in the clean function of a django form.</p>
  
  <p>The code looks like this:</p>
  
  <pre><code>def clean(self):
          file_csv = self.cleaned_data['csv_file']
          records = csv.reader(open('file_csv.name, 'rU'), dialect=csv.excel_tab)
  </code></pre>
  
  <p>how do I get the local path of file_csv ?</p>