code: def testIndexAndKeywordFilteringFind(self):
      self.assertRaises(ValueError, self.g.es.find, 2, test=4)
      self.assertTrue(self.g.es.find(2, test=2) == self.g.es[2])
  
imports: import unittest
  from igraph import Graph, Edge, EdgeSeq, VertexSeq
  from .utils import is_pypy
label_desc: Use image node_id 26 for calling the EdgeSeqTests obj's underlying member method code with example usage: obj.testIndexAndKeywordFilteringFind() without return types