code: def test_keywords_bad_keys(df_enc_big, key):
      encoder = StringSimilarityEncoder(keywords={key: ["A"]})
      with pytest.raises(ValueError):
          encoder.fit(df_enc_big)
  
imports: from difflib import SequenceMatcher
  import pandas
  import pytest
  from feature_engine.encoding import StringSimilarityEncoder
  from feature_engine.encoding.similarity_encoder import _gpm_fast
label_desc: Use image node_id 14 for calling a global function with example usage: test_keywords_bad_keys(df_enc_big, key) without return types