code: def _render_bundle(bundle_name):
      
      try:
          bundle = get_bundles()[bundle_name]
      except KeyError:
          raise ImproperlyConfigured("Bundle '%s' is not defined" % bundle_name)
  
      if bundle.use_bundle:
          return _render_file(bundle.bundle_type, bundle.get_url(), attrs=({'media':bundle.media} if bundle.media else {}))
  
      # Render files individually
      bundle_files = []
  
      for bundle_file in bundle.files:
          if bundle_file.precompile_in_debug:
              bundle_files.append(_render_file(bundle_file.bundle_type, bundle_file.precompile_url, attrs=({'media':bundle_file.media} if bundle.media else {})))
          else:
              bundle_files.append(_render_file(bundle_file.file_type, bundle_file.file_url, attrs=({'media':bundle_file.media} if bundle.media else {})))
  
      return '\n'.join(bundle_files)
docs: Renders the HTML for a bundle in place - one HTML tag or many depending on settings.USE_BUNDLES