2417         filterfunc = other.__contains__

  2417         filterfunc = other.__contains__

  2418         if self._ascending is not None:

  2418         if self._ascending is not None:

  2419             return orderedlazyset(self, filterfunc, ascending=self._ascending)

  2419             return orderedlazyset(self, filterfunc, ascending=self._ascending)

  2420         return lazyset(self, filterfunc)

  2420         return lazyset(self, filterfunc)

  2421 

  2421 

  2422     def _iterator(self):

  2428     def _iterator(self):

  2423         """Iterate over both collections without repeating elements

  2429         """Iterate over both collections without repeating elements

  2424 

  2430 

  2425         If the ascending attribute is not set, iterate over the first one and

  2431         If the ascending attribute is not set, iterate over the first one and

  2426         then over the second one checking for membership on the first one so we

  2432         then over the second one checking for membership on the first one so we