code: def _generate_examples(self, data_path):
      
      with tf.io.gfile.GFile(data_path, "rb") as fp:
        images = np.load(fp)
      images = np.transpose(images, (1, 0, 2, 3))
      images = np.expand_dims(images, axis=-1)
      for sequence in images:
        yield dict(image_sequence=sequence)
docs: Generate MovingMnist sequences.
  
      Args:
        data_path (str): Path to the data file
  
      Yields:
        20 x 64 x 64 x 1 uint8 numpy arrays