code: def get_replacements(
      replacements_path: str = "trade/utils/mapping.pair",
  ) -> List[Tuple[str, str]]:
      """
      Get the replacements from a given file. Used by trade preprocessing.
  
      Arguments
      ---------
      replacements_path: str
          File containing from, to pairs, one per line.
  
      Returns
      -------
      replacements: List of replacements, i.e. pairs of str
          Pairs of elements used to substitute the first element with the second.
      """
      replacements = []
      with open(replacements_path, "r") as fin:
          for line in fin.readlines():
              tok_from, tok_to = line.replace("\n", "").split("\t")
              replacements.append(
                  (" " + tok_from + " ", " " + tok_to + " ")
              )
      return replacements
  
imports: from itertools import product
  from statistics import mean
  from typing import Any, Dict, List, Optional, Set, Tuple
  import json
  import logging
  import os
  import re
  import shutil
  from tqdm import tqdm
  from speechbrain.utils.data_utils import download_file
label_desc: Use image node_id 8 for calling a global function with example usage: get_replacements(replacements_path) and returns: replacements