import tensorflow as tf

    # Add a prefix to the node names in the current graph and Restore using
    # remapped names.
    with self.test_session() as sess:
      v0 = tf.Variable(-1.0, name="restore_prefix/v0")
      v1 = tf.Variable(-1.0, name="restore_prefix/v1")

      with self.assertRaisesOpError("uninitialized value restore_prefix/v0"):
        sess.run(v0)
