code: def _nkconv(i):
      try:
          return int(i)
      except ValueError:
          return i.lower()
  
file_path: whoosh/src/whoosh/util/text.py
imports: import codecs, re
  from whoosh.compat import string_type, u, byte
label_desc: Use image node_id 5 for calling a global function with example usage: _nkconv(i) and returns: int, i