writer = tf.python_io.TFRecordWriter(output_file)
  with tf.gfile.FastGFile(file_path, 'rb') as f:
    data = f.read()
    example = tf.train.Example(features=tf.train.Features(feature={
      'data': tf.train.Feature(bytes_list=tf.train.BytesList(value=[data])) }))
    writer.write(example.SerializeToString())

Tensor("X/ParseSingleExample/ParseSingleExample:0", shape=(), dtype=string)