code: def column(self):
      return self._column
  
file_path: mars/mars/dataframe/base/explode.py
imports: import numpy
  import pandas
  from ...None import opcodes
  from ...core import OutputType, recursive_tile
  from ...serialization.serializables import AnyField, BoolField
  from ...utils import calc_nsplits
  from ..operands import DataFrameOperand, DataFrameOperandMixin
  from ..utils import parse_index, standardize_range_index
label_desc: Use image node_id 2 for calling the DataFrameExplode obj's underlying member method code with example usage: obj.column() and returns: self