code: def testIntegerFilteringSelect(self):
      subset = self.g.vs.select(2, 3, 4, 2)
      self.assertEqual(len(subset), 4)
      self.assertEqual(subset["test"], [2, 3, 4, 2])
      self.assertRaises(TypeError, self.g.vs.select, 2, 3, 4, 2, None)
  
      subset = self.g.vs[2, 3, 4, 2]
      self.assertTrue(len(subset) == 4)
      self.assertTrue(subset["test"] == [2, 3, 4, 2])
  
imports: import unittest
  from igraph import Graph, Vertex, VertexSeq
  from .utils import is_pypy
label_desc: Use image node_id 13 for calling the VertexSeqTests obj's underlying member method code with example usage: obj.testIntegerFilteringSelect() without return types