message: Update metrics.py
  Better error message
diff: @@ -3343,7 +3343,7 @@ def categorical_accuracy(y_true, y_pred):
  Categorical accuracy values.
  """
  # assert if predicted and true labels Tensors have the same shape
  - assert tf.shape(y_true)==y_pred.shape,"Both inputs must have same shapes and must be one-hot encoded. Use tf.one_hot() to one hot encode the inputs."
  + assert tf.shape(y_true)==y_pred.shape,"Both `y_true` and `y_pred` Tensors must have same shapes and must be one-hot encoded. Use tf.one_hot() to one hot encode the inputs."
  return math_ops.cast(
  math_ops.equal(
  