code: def _safe_region(region=None, context=None):
      
      ret = region or settings.get("region")
      context = context or identity
      if not ret:
          # Nothing specified; get the default from the identity object.
          if not context:
              _create_identity()
              context = identity
          ret = context.get_default_region()
      if not ret:
          # Use the first available region
          try:
              ret = regions[0]
          except IndexError:
              ret = ""
      return ret
docs: Value to use when no region is specified.