code: def gen_test_newline_predict_sentence(self, kwargs):
      f = build_supervised_model(get_random_data(100), kwargs)
      sentence = " ".join(get_random_words(20))
      f.predict(sentence, k=5)
      sentence += "\n"
      gotError = False
      try:
          f.predict(sentence, k=5)
      except ValueError:
          gotError = True
      self.assertTrue(gotError)
  
      f = build_supervised_model(get_random_data(100), kwargs)
      sentence = " ".join(get_random_words(20))
      f.get_sentence_vector(sentence)
      sentence += "\n"
      gotError = False
      try:
          f.get_sentence_vector(sentence)
      except ValueError:
          gotError = True
      self.assertTrue(gotError)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  from fasttext import train_supervised
  from fasttext import train_unsupervised
  from fasttext import util
  import fasttext
  import os
  import subprocess
  import unittest
  import tempfile
  import random
  import sys
  import copy
  import numpy
  from fasttext.tests.test_configurations import get_supervised_models
label_desc: Use image node_id 18 for calling the TestFastTextUnitPy obj's underlying member method code with example usage: obj.gen_test_newline_predict_sentence(kwargs) without return types