code: def _operator(self):
      return operator.or_
  
file_path: mars/mars/dataframe/arithmetic/bitwise_or.py
imports: import operator
  from ...None import opcodes
  from ...utils import classproperty, TreeReductionBuilder
  from .core import DataFrameBinopUfunc, DataFrameArithmeticTreeMixin
label_desc: Use image node_id 1 for calling the DataFrameOr obj's underlying member method code with example usage: obj._operator() and returns: operator