code: def _op_maker(op_class, op_symbol):
      
  
      def f(self, node, *args, **kwargs):
          """Return a partial function with an Op subclass with an operator
          already passed.
  
          Returns
          -------
          f : callable
          """
          return partial(op_class, op_symbol, *args, **kwargs)
      return f
docs: Return a function to create an op class with its symbol already passed.
  
      Returns
      -------
      f : callable