243         return asclist

   243         return asclist

   244 

   244 

   245     @util.propertycache

   245     @util.propertycache

   246     def _list(self):

   246     def _list(self):

   247         # _list is only lazily constructed if we have _set

   247         # _list is only lazily constructed if we have _set

   249         return list(self._set)

   249         return list(self._set)

   250 

   250 

   251     def __iter__(self):

   251     def __iter__(self):

   252         if self._ascending is None:

   252         if self._ascending is None:

   253             return iter(self._list)

   253             return iter(self._list)