code: def testKeywordFilteringSelect(self):
      g = Graph.Barabasi(10000)
      g.vs["degree"] = g.degree()
      g.vs["parity"] = [i % 2 for i in range(g.vcount())]
      length = len(g.vs(degree_gt=30))
      self.assertTrue(length < 1000)
      self.assertTrue(len(g.vs(degree_gt=30, parity=0)) <= 500)
      del g.vs["degree"]
      self.assertTrue(len(g.vs(_degree_gt=30)) == length)
  
imports: import unittest
  from igraph import Graph, Vertex, VertexSeq
  from .utils import is_pypy
label_desc: Use image node_id 17 for calling the VertexSeqTests obj's underlying member method code with example usage: obj.testKeywordFilteringSelect() without return types