class_docstr: tests Vocabulary Class
class_docstr_tok: ["tests","Vocabulary","Class"]
code: def test_lookup_iterables(self):
      self.assertEqual(self.vocab.lookup(["a", "b"]), ("a", "b"))
      self.assertEqual(self.vocab.lookup(("a", "b")), ("a", "b"))
      self.assertEqual(self.vocab.lookup(("a", "c")), ("a", "<UNK>"))
      self.assertEqual(
          self.vocab.lookup(map(str, range(3))),
          ("<UNK>", "<UNK>", "<UNK>"),
      )
  
imports: import unittest
  from collections import Counter
  from timeit import timeit
  from nltk.lm import Vocabulary
label_desc: Use image node_id 12 for calling the NgramModelVocabularyTests obj's underlying member method code with example usage: obj.test_lookup_iterables() without return types