code: def tearDown(self):
      autograd.training = True
  
file_path: singa/test/python/test_onnx_backend.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  from singa import tensor
  from singa import singa_wrap
  from singa import autograd
  from singa import sonnx
  from singa import opt
  import os
  import unittest
  import onnx.backend.test
label_desc: Use image node_id 2 for calling a global function with example usage: tearDown() without return types