code: def test_attribute_types(self, radius, center):
      points = radius * self.points
      if center is not None:
          points += center
  
      sv = SphericalVoronoi(points, radius=radius, center=center)
      assert sv.points.dtype is np.dtype(np.float64)
      assert sv.center.dtype is np.dtype(np.float64)
      assert isinstance(sv.radius, float)
  
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 22 for calling the TestSphericalVoronoi obj's underlying member method code with example usage: obj.test_attribute_types(radius, center) without return types