code: def test2(self):
      a = tensor.dmatrix()
      axis = tensor.scalar()
      w = sort(a, axis)
      f = theano.function([a, axis], w)
      for axis_val in 0, 1:
          gv = f(self.m_val, axis_val)
          gt = np.sort(self.m_val, axis_val)
          utt.assert_allclose(gv, gt)
  
imports: from __future__ import absolute_import, print_function, division
  from itertools import product, chain
  from functools import reduce
  import unittest
  from theano.tests import unittest_tools
  import numpy
  import theano
  from theano import tensor
  from theano.tensor.sort import sort, SortOp
  from theano.tensor.sort import argsort, ArgSortOp
  from theano.tensor.sort import topk, argtopk, topk_and_argtopk, TopKOp
label_desc: Use image node_id 3 for calling the Test_sort obj's underlying member method code with example usage: obj.test2() without return types