code: def test_get_score_df(self):
      corpus = build_hamlet_jz_corpus()
      tfidf = (
          CredTFIDF(corpus)
          .set_term_ranker(OncePerDocFrequencyRanker)
          .set_categories("hamlet")
      )
  
      np.testing.assert_almost_equal(
          tfidf.get_scores()[:5],
          [
              3.0757237e-05,
              4.1256023e-02,
              4.1256023e-02,
              5.5708409e-02,
              4.1256023e-02,
          ],
      )
      # print(tfidf.get_score_df().iloc[0])
      self.assertEqual(
          list(tfidf.get_score_df().columns),
          ["pos_cred_tfidf", "neg_cred_tfidf", "delta_cred_tf_idf"],
      )
  
imports: from unittest import TestCase
  import numpy
  from scattertext import CohensD, CredTFIDF, OncePerDocFrequencyRanker
  from scattertext.test.test_termDocMatrixFactory import build_hamlet_jz_corpus
label_desc: Use image node_id 1 for calling the TestCredTFIDF obj's underlying member method code with example usage: obj.test_get_score_df() without return types