code: def _checksum_paths():
    
    dataset2path = {}
    for dir_path in _CHECKSUM_DIRS:
      for fname in _list_dir(dir_path):
        if not fname.endswith(_CHECKSUM_SUFFIX):
          continue
        fpath = os.path.join(dir_path, fname)
        dataset_name = fname[:-len(_CHECKSUM_SUFFIX)]
        dataset2path[dataset_name] = fpath
    return dataset2path
docs: Returns dict {'dataset_name': 'path/to/checksums/file'}.