code: def testFixedSizePartitionerInt64(self):
      with self.cached_session():
          partitioner = partitioned_variables.fixed_size_partitioner(
              4, axis=0
          )
          with variable_scope.variable_scope(
              "root", partitioner=partitioner
          ):
              v0 = variable_scope.get_variable(
                  "v0", dtype=dtypes.int64, shape=[20]
              )
              v0_list = v0._get_variable_list()
              self.assertEqual(len(v0_list), 4)
  
imports: import os
  import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import cond
  from tensorflow.python.ops import init_ops
  from tensorflow.python.ops import partitioned_variables
  from tensorflow.python.ops import random_ops
  from tensorflow.python.ops import variable_scope
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.training import saver
label_desc: Use image node_id 2 for calling the PartitionerCreatorsTest obj's underlying member method code with example usage: obj.testFixedSizePartitionerInt64() without return types