code: def testEuclideanMetric(self):
      metric_instance = metric_wrapper(type_metric.EUCLIDEAN, [], None)
      self.assertEqual(2.0, metric_instance([0.0, 0.0], [2.0, 0.0]))
  
file_path: pyclustering/pyclustering/utils/tests/integration/it_metric.py
imports: import unittest
  import matplotlib
  import numpy
  from pyclustering.core.metric_wrapper import metric_wrapper
  from pyclustering.utils.metric import type_metric, distance_metric
label_desc: Use image node_id 1 for calling the MetricUnitTest obj's underlying member method code with example usage: obj.testEuclideanMetric() without return types