message: Just a dot in order to be consistent
  added a dot to the `7` to make clear it's a float (like every other number)
diff: @@ -447,7 +447,7 @@ estimator = tf.estimator.Estimator(model_fn=model_fn)
  x_train = np.array([1., 2., 3., 4.])
  y_train = np.array([0., -1., -2., -3.])
  x_eval = np.array([2., 5., 8., 1.])
  -y_eval = np.array([-1.01, -4.1, -7, 0.])
  +y_eval = np.array([-1.01, -4.1, -7., 0.])
  input_fn = tf.estimator.inputs.numpy_input_fn(
  {"x": x_train}, y_train, batch_size=4, num_epochs=None, shuffle=True)
  train_input_fn = tf.estimator.inputs.numpy_input_fn(
  