class_docstr: metrics utils unittest
class_docstr_tok: ["metrics","utils","unittest"]
docstr: test levenshtein distance 
docstr_tok: ["test","levenshtein","distance"]
code: def test_levenshtein(self):
      """test levenshtein distance"""
      seq_one = [5, 1, 1, 1, 0]
      seq_two = [5, 2, 3, 0, 2]
  
      levenshtein_distance = metric_utils.levenshtein(seq_one, seq_two)
      self.assertAllClose(levenshtein_distance, 4)
  
      # another case
      seq_one = [5, 1, 1, 1, 0]
      seq_two = [5, 1, 1, 1, 0]
  
      levenshtein_distance = metric_utils.levenshtein(seq_one, seq_two)
      self.assertAllClose(levenshtein_distance, 0)
  
file_path: delta/delta/utils/metrics/metric_utils_test.py
imports: import numpy
  import delta.compat
  from delta.utils.metrics import metric_utils
label_desc: Use image node_id 6 for calling the MetricUtilsTest obj's underlying member method code with example usage: obj.test_levenshtein() without return types