2443     def __len__(self):

  2443     def __len__(self):

  2444         # Basic implementation to be changed in future patches.

  2444         # Basic implementation to be changed in future patches.

  2445         l = baseset([r for r in self])

  2445         l = baseset([r for r in self])

  2446         return len(l)

  2446         return len(l)

  2447 

  2447 

  2453     def sort(self, reverse=False):

  2448     def sort(self, reverse=False):

  2454         self._subset.sort(reverse=reverse)

  2449         self._subset.sort(reverse=reverse)

  2455 

  2450 

  2456     def reverse(self):

  2451     def reverse(self):

  2457         self._subset.reverse()

  2452         self._subset.reverse()