code: def test_cannot_instantiate_incomplete_tagger():
      class BadTagger(BaseTagger):
          """A tagger without a tag method. How useless."""
  
          pass
  
      assert_raises(TypeError, lambda: BadTagger())
  
file_path: TextBlob/tests/test_taggers.py
imports: from __future__ import unicode_literals
  import os
  import unittest
  from nose.tools import *
  from nose.plugins.attrib import attr
  from textblob.base import BaseTagger
  import textblob.taggers
label_desc: Use image node_id 1 for calling a global function with example usage: test_cannot_instantiate_incomplete_tagger() without return types