code: def testInitFromRootCheckpoint(self):
      checkpoint_dir = self.get_temp_dir()
      with self.cached_session() as session:
          v1, v2, v3, v4 = _create_checkpoints(session, checkpoint_dir)
  
      # New graph and session.
      with ops.Graph().as_default() as g:
          with self.session(graph=g) as session:
              with variable_scope.variable_scope("some_scope"):
                  my1 = variable_scope.get_variable("var1", [1, 10])
                  my2 = variable_scope.get_variable("var2", [10, 10])
                  my3 = variable_scope.get_variable("var3", [100, 100])
                  with variable_scope.variable_scope("useful_scope"):
                      my4 = variable_scope.get_variable("var4", [9, 9])
  
              checkpoint_utils.init_from_checkpoint(
                  checkpoint_dir,
                  {
                      "/": "some_scope/",
                  },
              )
  
              session.run(variables.global_variables_initializer())
              self.assertAllEqual(my1.eval(session), v1)
              self.assertAllEqual(my2.eval(session), v2)
              self.assertAllEqual(my3.eval(session), v3)
              self.assertAllEqual(my4.eval(session), v4)
  
imports: import os
  import pathlib
  import time
  import numpy
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.python.checkpoint import checkpoint
  from tensorflow.python.client import session
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import init_ops
  from tensorflow.python.ops import partitioned_variables
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import variable_scope
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import test
  from tensorflow.python.training import checkpoint_utils
  from tensorflow.python.training import saver
label_desc: Use image node_id 10 for calling the CheckpointsTest obj's underlying member method code with example usage: obj.testInitFromRootCheckpoint() without return types