code: def _pair_to_dict_tuple(pair: str) -> Tuple[str, int]:
      """Construct mappings from feature/class names to numbers."""
      number_str, name = pair.split("=")
      number = int(number_str)
      return (name, number)
  
file_path: skll/skll/utils/commandline/skll_convert.py
imports: import argparse
  import logging
  import sys
  from pathlib import Path
  from typing import Dict, List, Optional, Tuple
  from bs4 import UnicodeDammit
  from skll.data.dict_vectorizer import DictVectorizer
  from skll.data.readers import EXT_TO_READER
  from skll.data.writers import EXT_TO_WRITER, ARFFWriter, CSVWriter, LibSVMWriter, TSVWriter
  from skll.version import __version__
label_desc: Use image node_id 1 for calling a global function with example usage: _pair_to_dict_tuple(pair) and returns: name,  number