code: def get_function(self, dtype, transpose_A=False, slice_tensors=False):
      alpha = theano.tensor.scalar(dtype=dtype)
      beta = theano.tensor.scalar(dtype=dtype)
      A = theano.tensor.matrix(dtype=dtype)
      x = theano.tensor.vector(dtype=dtype)
      y = theano.tensor.vector(dtype=dtype)
      if transpose_A:
          A_1 = A.T
      else:
          A_1 = A
      if slice_tensors:
          A_2 = A_1[:: -self.slice_step]
          x_2 = x[:: -self.slice_step]
          y_2 = y[:: -self.slice_step]
      else:
          A_2 = A_1
          x_2 = x
          y_2 = y
      return theano.function(
          [alpha, A, x, beta, y],
          self.gemv(y_2, alpha, A_2, x_2, beta),
          mode=self.mode,
      )
  
imports: from __future__ import absolute_import, print_function, division
  import sys
  import numpy
  from unittest import TestCase
  from nose.plugins.skip import SkipTest
  import theano
  import theano.tensor
  from theano.tensor.blas_c import CGer
  from theano.tensor.blas_scipy import ScipyGer
  from theano.tensor.blas import Ger
  from theano.tensor.blas_c import CGemv
  from theano.tensor.blas import Gemv
  from theano.tensor.blas_c import check_force_gemv_init
  from theano.tests import unittest_tools
  from theano.tests.unittest_tools import TestOptimizationMixin
  from theano.tensor.tests.test_blas import BaseGemv, TestBlasStrides
label_desc: Use image node_id 2 for calling the TestCGemvNoFlags obj's underlying member method code with example usage: obj.get_function(dtype, transpose_A, slice_tensors) and returns: theano