code: def testVarInitOutsideTfFunction(self):
      v = constant_op.constant(1.0)
      v = api.relayout(v, Layout.replicated(self.mesh, rank=0))
  
      w = d_variable.DVariable(v)
  
      @polymorphic_function.function()
      def assign_var(x):
          w.assign(x * 2)
          return w + x
  
      out = assign_var(constant_op.constant(1.0))
      api.check_layout(w, Layout.replicated(self.mesh, rank=0))
      self.assertEqual(w.numpy(), 2.0)
      self.assertEqual(out.numpy(), 3.0)
  
imports: import numpy
  from tensorflow.dtensor.python import api
  from tensorflow.dtensor.python import d_variable
  from tensorflow.dtensor.python import layout
  from tensorflow.dtensor.python.tests import test_util
  from tensorflow.python.eager.polymorphic_function import polymorphic_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 8 for calling the DTensorVariableTest obj's underlying member method code with example usage: obj.testVarInitOutsideTfFunction() and returns: unknown