code: def testParseTensorName(self):
      node_name, slot = debug_graphs.parse_node_or_tensor_name(
          "namespace1/node_2:3"
      )
  
      self.assertEqual("namespace1/node_2", node_name)
      self.assertEqual(3, slot)
  
imports: from tensorflow.python.debug.lib import debug_graphs
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the ParseNodeOrTensorNameTest obj's underlying member method code with example usage: obj.testParseTensorName() without return types