human
Complete the below
def decode_from_file(estimator, filename):

    ''''Compute predictions on entries in filename and write them out.'
    '''
 ... What is a Python code to compute predictions on entries in filename and write them out?
assistant
#Here is Python code to compute predictions on entries in filename and write them out.
    hparams = estimator.hparams
    problem_id = FLAGS.decode_problem_id
    inputs_vocab = hparams.problems[problem_id].vocabulary['inputs']
    targets_vocab = hparams.problems[problem_id].vocabulary['targets']
    tf.logging.info('Performing    decoding    from    a    file.')
    (sorted_inputs, sorted_keys) = _get_sorted_inputs(filename)
    num_decode_batches = (((len(sorted_inputs) - 1) // FLAGS.decode_batch_size) + 1)
    input_fn = _decode_batch_input_fn(problem_id, num_decode_batches, sorted_inputs, inputs_vocab)
    decodes = []
    for _ in range(num_decode_batches):
        result_iter = estimator.predict(input_fn=(input_fn.next if six.PY2 else input_fn.__next__), as_iterable=True)
        for result in result_iter:
            def log_fn(inputs, outputs):
                decoded_inputs = inputs_vocab.decode(_save_until_eos(inputs.flatten()))
                tf.logging.info(('Inference    results    INPUT:    %s' % decoded_inputs))
                decoded_outputs = targets_vocab.decode(_save_until_eos(outputs.flatten()))
                tf.logging.info(('Inference    results    OUTPUT:    %s' % decoded_outputs))
                return decoded_outputs
            if FLAGS.decode_return_beams:
                beam_decodes = []
                output_beams = np.split(result['outputs'], FLAGS.decode_beam_size, axis=0)
                for (k, beam) in enumerate(output_beams):
                    tf.logging.info(('BEAM    %d:' % k))
                    beam_decodes.append(log_fn(result['inputs'], beam))
                decodes.append(' DCTB '.join(beam_decodes))
            else:
                decodes.append(log_fn(result['inputs'], result['outputs']))
    sorted_inputs.reverse()
    decodes.reverse()
    if FLAGS.decode_to_file:
        output_filename = FLAGS.decode_to_file
    else:
        output_filename = filename
    if (FLAGS.decode_shards > 1):
        base_filename = (output_filename + ('%.2d' % FLAGS.worker_id))
    else:
        base_filename = output_filename
    decode_filename =...