code: def test_extract(self):
      noun_phrases = self.extractor.extract(self.text)
      assert_true("Python" in noun_phrases)
      assert_true("design philosophy" in noun_phrases)
      assert_true("code readability" in noun_phrases)
  
file_path: TextBlob/tests/test_np_extractor.py
imports: from __future__ import unicode_literals
  import unittest
  from nose.tools import *
  from nose.plugins.attrib import attr
  import nltk
  from textblob.base import BaseNPExtractor
  from textblob.np_extractors import ConllExtractor
  from textblob.utils import filter_insignificant
label_desc: Use image node_id 2 for calling the TestConllExtractor obj's underlying member method code with example usage: obj.test_extract() without return types