code: def test_4_axes(self):
      self.compute_some_axes(4)
  
imports: from __future__ import print_function, absolute_import, division
  from unittest import TestCase
  import numpy
  import theano
  import theano.tensor
  from theano.tests import unittest_tools
  from theano.tests.unittest_tools import SkipTest
  from .config import mode_with_gpu, mode_without_gpu
  from .test_basic_ops import rand_gpuarray
  from ..None import GpuArrayType
  from ..reduction import GpuMaxAndArgmax
  from ..dnn import GpuDnnReduction
  import math
label_desc: Use image node_id 20 for calling the BaseTest obj's underlying member method code with example usage: obj.test_4_axes() without return types