code: def tokenize(self, path):
          
          assert os.path.exists(path)
          # Add words to the dictionary
          with open(path, 'r') as f:
              tokens = 0
              for line in f:
                  words = line.split() + ['<eos>']
                  tokens += len(words)
                  for word in words:
                      self.dictionary.add_word(word)
  
          # Tokenize file content
          with open(path, 'r') as f:
              ids = torch.LongTensor(tokens)
              token = 0
              for line in f:
                  words = line.split() + ['<eos>']
                  for word in words:
                      ids[token] = self.dictionary.word2idx[word]
                      token += 1
  
          return ids
docs: Tokenizes a text file.