code: def test_parse_docword(self):
      d = parse_docword(self.tmpfile_b, self.tmpfile_vocab)
      self.assertTrue(d[0] == {"b": 5, "c": 10, "f": 353})
      self.assertTrue(d[1] == {"a": 7, "g": 3, "d": 100})
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import os
  import tempfile
  import shutil
  import unittest
  import turicreate
  from turicreate.toolkits._main import ToolkitError
  from turicreate.toolkits.topic_model import topic_model
  from turicreate.toolkits.text_analytics import parse_sparse
  from turicreate.toolkits.text_analytics import parse_docword
  from turicreate.toolkits.topic_model import perplexity
  from .None import util
  import time
  import random
  import numpy
  import itertools
label_desc: Use image node_id 3 for calling the ParsersTest obj's underlying member method code with example usage: obj.test_parse_docword() without return types