class_docstr: check wrt. the scipy implementation 
code: def test_Lp(self):
      p = 1.5
      xq, yb = self.make_example()
      ref_dis = np.array(
          [
              [scipy.spatial.distance.minkowski(x, y, p) for y in yb]
              for x in xq
          ]
      )
      new_dis = faiss.pairwise_distances(xq, yb, faiss.METRIC_Lp, p)
      new_dis = new_dis ** (1 / p)  # post processing
      self.assertTrue(np.allclose(ref_dis, new_dis))
  
imports: import numpy
  import faiss
  import unittest
  from common_faiss_tests import get_dataset_2
  import scipy.spatial.distance
label_desc: Use image node_id 6 for calling the TestExtraDistances obj's underlying member method code with example usage: obj.test_Lp() without return types