code: def shape(self):
      shape = list(self.groupby_obj.obj.shape)
      if self.is_frame and self.selection:
          shape[1] = len(self.selection)
      return tuple(shape)
  
imports: import sys
  from collections.abc import Iterable
  import cloudpickle
  import numpy
  from pandas.core.groupby import DataFrameGroupBy, SeriesGroupBy
  from ..utils import estimate_pandas_size, pd_release_version, no_default
label_desc: Use image node_id 10 for calling the GroupByWrapper obj's underlying member method code with example usage: obj.shape() and returns: tuple