code: def testUninitialized(self):
      with self.assertRaisesRegex(
          errors.FailedPreconditionError,
          "Attempting to use uninitialized value Variable",
      ):
          v = variable_v1.VariableV1([1, 2])
          self.evaluate(v[:].assign([1, 2]))
  
file_path: tensorflow-upstream/tensorflow/python/kernel_tests/v1_compat_tests/array_ops_test.py
imports: from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the SliceAssignTest obj's underlying member method code with example usage: obj.testUninitialized() without return types