def setslice(self, w_obj, w_start, w_stop, w_sequence):
w_descr = self.lookup(w_obj, '__setslice__')
if w_descr is not None:
w_start, w_stop = old_slice_range(self, w_obj, w_start, w_stop)
self.get_and_call_function(w_descr, w_obj, w_start, w_stop,
w_sequence)
else:
ObjSpace.setslice(self, w_obj, w_start, w_stop, w_sequence)
