code: def test_handles_even_length_arrays(self):
      X = np.random.rand(64).astype(np.float32)
      Y_exp = np.copy(X)
      Y_exp[0::2] = 0.0
      Y_act = self._run_zero_even_op(X)
      np.testing.assert_allclose(Y_act, Y_exp)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import numpy
  import unittest
  from caffe2.proto import caffe2_pb2
  from caffe2.python import core
  from caffe2.python import workspace
  import detectron.utils.c2
label_desc: Use image node_id 7 for calling the ZeroEvenOpTest obj's underlying member method code with example usage: obj.test_handles_even_length_arrays() without return types