class_docstr: A corpus reader used to access language An Crubadan n-gram files.
docstr: Return a list of supported languages as ISO 639-3 codes
docstr_tok: ["Return","a","list","of","supported","languages","as","ISO","639-3","codes"]
code: def langs(self):
      """Return a list of supported languages as ISO 639-3 codes"""
      return [row[1] for row in self._lang_mapping_data]
  
file_path: nltk/nltk/corpus/reader/crubadan.py
imports: import re
  from os import path
  from nltk.corpus.reader import CorpusReader
  from nltk.data import ZipFilePathPointer
  from nltk.probability import FreqDist
label_desc: Use image node_id 3 for calling the CrubadanCorpusReader obj's underlying member method code with example usage: obj.langs() and returns: unknown