code: def test_voronoi_circles(self):
      sv = SphericalVoronoi(self.points)
      for vertex in sv.vertices:
          distances = distance.cdist(sv.points, np.array([vertex]))
          closest = np.array(sorted(distances)[0:3])
          assert_almost_equal(closest[0], closest[1], 7, str(vertex))
          assert_almost_equal(closest[0], closest[2], 7, str(vertex))
  
imports: import numpy
  import itertools
  from numpy.testing import assert_equal, assert_almost_equal, assert_array_equal, assert_array_almost_equal
  import pytest
  from pytest import raises
  from scipy.spatial import SphericalVoronoi, distance
  from scipy.optimize import linear_sum_assignment
  from scipy.constants import golden
  from scipy.special import gamma
label_desc: Use image node_id 10 for calling the TestSphericalVoronoi obj's underlying member method code with example usage: obj.test_voronoi_circles() without return types