code: def __init__(
      self,
      by=None,
      level=None,
      as_index=None,
      sort=None,
      group_keys=None,
      shuffle_size=None,
      output_types=None,
      **kw,
  ):
      super().__init__(
          _by=by,
          _level=level,
          _as_index=as_index,
          _sort=sort,
          _group_keys=group_keys,
          _shuffle_size=shuffle_size,
          _output_types=output_types,
          **kw,
      )
      if output_types:
          if self.stage in (OperandStage.map, OperandStage.reduce):
              if output_types[0] in (
                  OutputType.dataframe,
                  OutputType.dataframe_groupby,
              ):
                  output_types = [OutputType.dataframe]
              else:
                  output_types = [OutputType.series]
          else:
              if output_types[0] in (
                  OutputType.dataframe,
                  OutputType.dataframe_groupby,
              ):
                  output_types = [OutputType.dataframe_groupby]
              elif output_types[0] == OutputType.series:
                  output_types = [OutputType.series_groupby]
          self.output_types = output_types
  
imports: import itertools
  from functools import partial
  import numpy
  import pandas
  from ...None import opcodes
  from ...core import ENTITY_TYPE, Entity, OutputType
  from ...core.operand import OperandStage, MapReduceOperand
  from ...lib.groupby_wrapper import wrapped_groupby
  from ...serialization.serializables import BoolField, Int32Field, AnyField
  from ...utils import lazy_import, pd_release_version, no_default
  from ..align import align_dataframe_series, align_series_series
  from ..initializer import Series
  from ..core import SERIES_TYPE, SERIES_CHUNK_TYPE
  from ..utils import build_concatenated_rows_frame, hash_dataframe_on, build_df, build_series, parse_index, is_cudf
  from ..operands import DataFrameOperandMixin, DataFrameShuffleProxy
label_desc: Use image node_id 1 to create a new DataFrameGroupByOperand object from inherited base classes: MapReduceOperand, DataFrameOperandMixin with example: obj = DataFrameGroupByOperand(by, level, as_index, sort, group_keys, shuffle_size, output_types)