code: def cumsum(groupby, axis=0):
      op = GroupByCumsum(axis=axis)
      return op(groupby)
  
imports: import numpy
  import pandas
  from ...None import opcodes
  from ...core import OutputType
  from ...serialization.serializables import BoolField, AnyField
  from ...utils import lazy_import
  from ..utils import parse_index, build_empty_df, build_empty_series, validate_axis
  from ..operands import DataFrameOperandMixin, DataFrameOperand
label_desc: Use image node_id 5 for calling a global function with example usage: cumsum(groupby, axis) and returns: op