import tensorflow as tf

      classifier_utils.file_based_convert_examples_to_features(
          train_examples, label_list, FLAGS.max_seq_length, tokenizer,
          train_file, task_name)
    tf.logging.info("***** Running training *****")
    tf.logging.info("  Num examples = %d", len(train_examples))
    tf.logging.info("  Batch size = %d", FLAGS.train_batch_size)
    tf.logging.info("  Num steps = %d", FLAGS.train_step)
    train_input_fn = classifier_utils.file_based_input_fn_builder(
        input_file=train_file,
        seq_length=FLAGS.max_seq_length,
