human
Solve the following python programming problem given the following code:
def arg(* args, **kwargs) : 
    'Decorator for CLI args.' 
    def _decorator(func) : 
        if (not hasattr (func, 'arguments')) : 
            func.arguments = [] 
if ((args, kwargs) not in func.arguments) : 
            func.arguments.insert (0, (args, kwargs)) 
return func 
return kwargs 

    
    

    Fix the buggy line: return kwargs
assistant
#Here is Python code to fix the buggy line: return kwargs
.

return def _decorator(