code: def test_sparse(self):
      if not scipy_imported:
          raise SkipTest("Optional package SciPy not installed")
      mySymbolicSparseList = TypedListType(
          sparse.SparseType("csr", theano.config.floatX)
      )()
      mySymbolicSparse = sparse.csr_matrix()
  
      z = Index()(mySymbolicSparseList, mySymbolicSparse)
  
      f = theano.function([mySymbolicSparseList, mySymbolicSparse], z)
  
      x = sp.csr_matrix(random_lil((10, 40), theano.config.floatX, 3))
      y = sp.csr_matrix(random_lil((10, 40), theano.config.floatX, 3))
  
      self.assertTrue(f([x, y], y) == 1)
  
imports: from __future__ import absolute_import, print_function, division
  import unittest
  from nose.plugins.skip import SkipTest
  import numpy
  import theano
  import theano.typed_list
  from theano import tensor
  from theano.tensor.type_other import SliceType
  from theano.typed_list.type import TypedListType
  from theano.typed_list.basic import GetItem, Insert, Append, Extend, Remove, Reverse, Index, Count, Length, make_list
  from theano import sparse
  from theano.tests import unittest_tools
label_desc: Use image node_id 4 for calling the test_index obj's underlying member method code with example usage: obj.test_sparse() without return types