class_docstr: Low-level lattice tests 
class_docstr_tok: ["Low-level","lattice","tests"]
code: def test_ZnSphereCodecAlt24(self):
      self.run_ZnSphereCodecAlt(24, 14)
  
imports: from __future__ import print_function
  import numpy
  import unittest
  import faiss
  from common_faiss_tests import get_dataset_2
  from faiss.contrib.datasets import SyntheticDataset
  from faiss.contrib.inspect_tools import get_additive_quantizer_codebooks
label_desc: Use image node_id 6 for calling the LatticeTest obj's underlying member method code with example usage: obj.test_ZnSphereCodecAlt24() without return types