code: def __init__(
      self, node_type, value, gid, name, left=None, right=None
  ):
      self.node_type = node_type
      self.value = numpy.float32(value)
      self.gid = gid
      self.node_name = name
      self.left = left
      self.right = right
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import turicreate
  import unittest
  import json
  import random
  import numpy
  import pytest
label_desc: Use image node_id 1 to create a new GBDTNode object  with example: obj = GBDTNode(node_type, value, gid, name, left, right)