class_docstr: Test class for utils_tf
class_docstr_tok: ["Test","class","for","utils_tf"]
code: def setUp(self):
      super(TestUtilsTF, self).setUp()
      self.sess = tf.Session()
  
file_path: cleverhans/cleverhans_v3.1.0/tests_tf/test_utils_tf.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import numpy
  import tensorflow
  from cleverhans import utils_tf
  from cleverhans.devtools.checks import CleverHansTest
label_desc: Use image node_id 1 for calling the TestUtilsTF obj's underlying member method code with example usage: obj.setUp() without return types