message: fixed eval num_epochs.
diff: @@ -453,7 +453,7 @@ input_fn = tf.estimator.inputs.numpy_input_fn(
  train_input_fn = tf.estimator.inputs.numpy_input_fn(
  {"x": x_train}, y_train, batch_size=4, num_epochs=1000, shuffle=False)
  eval_input_fn = tf.estimator.inputs.numpy_input_fn(
  - {"x": x_eval}, y_eval, batch_size=4, num_epochs=1000, shuffle=False)
  + {"x": x_eval}, y_eval, batch_size=4, num_epochs=1, shuffle=False)
  # train
  estimator.train(input_fn=input_fn, steps=1000)
  