code: def bitor(df, other, axis="columns", level=None, fill_value=None):
      op = DataFrameOr(
          axis=axis,
          level=level,
          fill_value=fill_value,
          lhs=df,
          rhs=other,
      )
      return op(df, other)
  
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 a global function with example usage: bitor(df, other, axis, level, fill_value) and returns: op