code: def __init__(self, *unused):
      try:
          from nltk.tokenize import word_tokenize
  
          self.word_tokenize = word_tokenize
      except ImportError:
          raise ImportError(
              "Please install nltk with: pip install nltk"
          )
  
imports: from fairseq.data.encoders import register_tokenizer
  from fairseq.dataclass import FairseqDataclass
label_desc: Use image node_id 1 to create a new NLTKTokenizer object from inherited base classes: object with example: obj = NLTKTokenizer()