human
Solve the following python programming problem given the following code:
@ classmethod 
def ensure_va_kwa(cls, f, parent = None) : 
    'Ensures `f` accepts both ``*varargs`` and ``**kwargs``.
    
    If `f` does not support ``*args``, it will be wrapped with a
    function which cuts away extra arguments in ``*args``.
    
    If `f` does not support ``*args``, it will be wrapped with a
    function which discards the ``**kwargs``.
    
    :param f:
    :type  f:       callable
    :param parent:  The parent on which `f` is defined. If specified, we will perform
                    ``parent.<name of f> = wrapper`` in the case we needed to wrap `f`.
    :type  parent:  object
    :returns: A callable which is guaranteed to accept both ``*args`` and ``**kwargs``.
    :rtype: callable
    ' 
    (is_method, args, varargs, varkw, defaults) = cls.getargspec (f) 
    va_kwa_wrapper = None 
    if ((varargs is None) and (varkw is None)) : 
        if args : 
            def va_kwa_wrapper(* va, **kw) : 
                kws = kw.copy () 
                for k in kw : 
                    if (k not in args) : 
                        del kws [k] 
return f (* va [: len (args)], ** kws) 
else : 
            def va_kwa_wrapper(* va, **kw) : 
                return f () 
else : 
        if (varargs is None) : 
            if args : 
                def va_kwa_wrapper(* va, **kw) : 
                    return f (* va [: len (args)], ** kw) 
else : 
                def va_kwa_wrapper(* va, **kw) : 
                    return f (** kw) 
else : 
            if (varkw is None) : 
                if args : 
                    def va_kwa_wrapper(* va, **kw) : 
                        kws = kw.copy () 
                        for k in kw : 
                            if (k not in args) : 
                                del kws [k] 
return f (* va, ** kw) 
else : 
                    def va_kwa_wrapper(* va, **kw) : 
                        return f (* va) 
if va_kwa_wrapper : 
        va_kwa_wrapper.info = frozendict (cls.callable_info (f).update ({ 
            'varargs' : True, 
           ...

    
    

    Fix the buggy line: setattr (varargs, info ['name'], va_kwa_wrapper)
assistant
#Here is Python code to fix the buggy line: setattr (varargs, info ['name'], va_kwa_wrapper)
.

setattr (parent, info ['name'], va_kwa_wrapper)