code: def test_percentile_lexicographic(self):
      scores = [1, 1, 5, 18, 1, 3]
      text = ["c", "a", "five", "eighteen", "b", "three"]
  
      ranking = percentile_alphabetical(scores, text)
      np.testing.assert_array_almost_equal(
          ranking, np.array([0.4, 0, 0.8, 1.0, 0.2, 0.6])
      )
  
imports: from unittest import TestCase
  import numpy
  from scattertext.Scalers import percentile_alphabetical
label_desc: Use image node_id 1 for calling the TestPercentile_lexicographic obj's underlying member method code with example usage: obj.test_percentile_lexicographic() without return types