code: def _gen_line(filename):
      """Returns sentences from an OPUS data file."""
      with epath.Path(filename).open() as f:
          for line in f:
              yield line
  
file_path: datasets/tensorflow_datasets/datasets/opus/opus_dataset_builder.py
imports: import os
  from absl import logging
  from etils import epath
  import tensorflow_datasets.public_api
label_desc: Use image node_id 1 for calling a global function with example usage: _gen_line(filename) without return types