human
Solve the following python programming problem given the following code:
@ classmethod 
def _bind_operator_method(cls, name, op) : 
    ' bind operator method like DataFrame.add to this class ' 
    def meth(self, other, axis = 'columns', level = None, fill_value = None) : 
        if (level is not None) : 
            raise NotImplementedError ('level must be None') 
axis = self._validate_axis (axis) 
        if (axis == 1) : 
            if isinstance (other, Series) : 
                msg = 'Unable to {0} dd.Series with axis=1'.format (name) 
                raise ValueError (msg) 
dummy = _emulate (op, self, other, axis = axis, fill_value = fill_value) 
        return map_partitions (op, dummy, self, other, axis = axis, fill_value = fill_value) 
meth.__doc__ = meth.__doc__ 
    bind_method (cls, name, meth) 

    
    

    Fix the buggy line: meth.__doc__ = meth.__doc__
assistant
#Here is Python code to fix the buggy line: meth.

meth.__doc__ = op.__doc__