docs: def settings_api():
      """
      Virtual ``settings.py`` with values transported from real
      :mod:`settings.py`, so the Brython frontend may be configured same way as
      backend.
  
      Some of the critical values are intentionally left out.
      """
      variables = [
          "%s = %s" % (var, repr(getattr(settings, var)))
          for var in sorted(dir(settings))
          if (not var.startswith("_") and var.upper() == var and
              not var.startswith("SEEDER"))  # hide the private tokens and url
      ]
  
      return PY_HEADER + "\n\n".join(variables)