message: Fixes the formatting issue pointed out at
diff: @@ -421,7 +421,7 @@ class BasicRNNCell(LayerRNNCell):
  def build(self, inputs_shape):
  if inputs_shape[-1] is None:
  raise ValueError("Expected inputs.shape[-1] to be known, saw shape: %s"
  - % inputs_shape)
  + % (inputs_shape,))
  input_depth = inputs_shape[-1]
  self._kernel = self.add_variable(
  @@ -510,7 +510,7 @@ class GRUCell(LayerRNNCell):
  def build(self, inputs_shape):
  if inputs_shape[-1] is None:
  raise ValueError("Expected inputs.shape[-1] to be known, saw shape: %s"
  - % inputs_shape)
  + % (inputs_shape,))
  input_depth = inputs_shape[-1]
  self._gate_kernel = self.add_variable(
  @@ -681,7 +681,7 @@ class BasicLSTMCell(LayerRNNCell):
  def build(self, inputs_shape):
  if inputs_shape[-1] is None:
  raise ValueError("Expected inputs.shape[-1] to be known, saw shape: %s"
  - % inputs_shape)
  + % (inputs_shape,))
  input_depth = inputs_shape[-1]
  h_depth = self._num_units
  @@ -875,7 +875,7 @@ class LSTMCell(LayerRNNCell):
  def build(self, inputs_shape):
  if inputs_shape[-1] is None:
  raise ValueError("Expected inputs.shape[-1] to be known, saw shape: %s"
  - % inputs_shape)
  + % (inputs_shape,))
  input_depth = inputs_shape[-1]
  h_depth = self._num_units if self._num_proj is None else self._num_proj
  