code: def test_missing_language_model():
      with pytest.raises(TextpipeMissingModelException):
          DOC_6.nwords
  
imports: import re
  from unittest import mock
  import pytest
  import spacy
  import numpy
  from fakeredis import FakeRedis
  from textpipe.doc import Doc, TextpipeMissingModelException, RedisIDFWeightingMismatchException
  from textpipe.wrappers import RedisKeyedVectors
label_desc: Use image node_id 9 for calling a global function with example usage: test_missing_language_model() without return types