code: def testPushPeekTopObj(self):
      t_stack = traceable_stack.TraceableStack()
      t_stack.push_obj(42.0)
      t_stack.push_obj("hope")
      self.assertEqual("hope", t_stack.peek_top_obj())
  
file_path: tensorflow/tensorflow/python/framework/traceable_stack_test.py
imports: from tensorflow.python.framework import test_util
  from tensorflow.python.framework import traceable_stack
  from tensorflow.python.platform import googletest
  from tensorflow.python.util import tf_inspect
label_desc: Use image node_id 2 for calling the TraceableStackTest obj's underlying member method code with example usage: obj.testPushPeekTopObj() without return types