class_docstr: Base Preparer class for nlp
class_docstr_tok: ["Base","Preparer","class","for","nlp"]
docstr: Save a raw file.
docstr_tok: ["Save","a","raw","file","."]
code: def save_a_raw_file(
      self, label, text_after, one_path_after, infer_without_label
  ):
      """Save a raw file."""
      raise NotImplementedError
  
imports: import os
  import math
  from pathlib import Path
  from absl import logging
  import delta.compat
  import numpy
  from delta import utils
  from delta.data.preprocess.utils import prepare_embedding
  from delta.utils.solver.utils.solver_utils import get_session_conf
  from delta.data.preprocess.utils import prepare_vocab
  from delta.data.preprocess.utils import prepare_vocab_from_config
  from delta.data.preprocess.utils import get_pre_process_text_ds_iter
  from delta.data.utils.common_utils import get_file_len
label_desc: Use image node_id 6 for calling the TextPreparer obj's underlying member method code with example usage: obj.save_a_raw_file(label, text_after, one_path_after, infer_without_label) without return types