code: def make_multipart(self, content_disposition=None, content_type=None,
                         content_location=None):
          
          self.headers['Content-Disposition'] = content_disposition or 'form-data'
          self.headers['Content-Disposition'] += '; '.join([
              '', self._render_parts(
                  (('name', self._name), ('filename', self._filename))
              )
          ])
          self.headers['Content-Type'] = content_type
          self.headers['Content-Location'] = content_location
docs: Makes this request field into a multipart request field.
  
          This method overrides "Content-Disposition", "Content-Type" and
          "Content-Location" headers to the request parameter.
  
          :param content_type:
              The 'Content-Type' of the request body.
          :param content_location:
              The 'Content-Location' of the request body.