code: def langcode_to_lang(lcode):
      if lcode in lcode2lang:
          return lcode2lang[lcode]
      elif lcode.lower() in lcode2lang:
          return lcode2lang[lcode.lower()]
      else:
          return lcode
  
imports: import re
label_desc: Use image node_id 1 for calling a global function with example usage: langcode_to_lang(lcode) and returns: lcode2lang, lcode2lang, lcode