2419 

  2419 

  2420     def reverse(self):

  2420     def reverse(self):

  2421         self._subset.reverse()

  2421         self._subset.reverse()

  2422         self._ascending = not self._ascending

  2422         self._ascending = not self._ascending

  2423 

  2423 

  2425     """Represent the addition of two sets

  2425     """Represent the addition of two sets

  2426 

  2426 

  2427     Wrapper structure for lazily adding two structures without losing much

  2427     Wrapper structure for lazily adding two structures without losing much

  2428     performance on the __contains__ method

  2428     performance on the __contains__ method

  2429 

  2429