code: def init_score(self):
      return self._init_score
  
imports: import itertools
  import logging
  import operator
  import pickle
  from collections import defaultdict
  from functools import reduce
  import numpy
  from ....None import opcodes
  from ....core import ExecutableTuple, OutputType, recursive_tile
  from ....core.context import get_context
  from ....core.operand import MergeDictOperand
  from ....serialization.serializables import FieldTypes, DictField, Int32Field, KeyField, ListField, StringField
  from ...utils import concat_chunks, collect_ports
  from ._align import align_data_set
  from .core import LGBMModelType, get_model_cls_from_type
label_desc: Use image node_id 6 for calling the LGBMTrain obj's underlying member method code with example usage: obj.init_score() and returns: self