message: Fixed error from printing out of IndexedSlices objects.
diff: @@ -147,7 +147,7 @@ class IndexedSlices(internal.NativeObject, composite_tensor.CompositeTensor):
  return "IndexedSlices(indices=%s, values=%s%s)" % (
  self._indices, self._values,
  (", dense_shape=%s" %
  - self._dense_shape) if self._dense_shape is not None else "")
  + (self._dense_shape,)) if self._dense_shape is not None else "")
  def __neg__(self):
  return IndexedSlices(-self.values, self.indices, self.dense_shape)
  