docs: def export_handle(self, directory):
          """Get a filehandle for exporting"""
          filename = getattr(self, 'filename')
          dest_file = "%s/%s" % (directory, filename)
          dest_dir = os.path.dirname(dest_file)
          if not os.path.isdir(dest_dir):
              os.mkdir(dest_dir, 0o700)
  
          return open(dest_file, 'w')