human
Solve the following python programming problem given the following code:
def args(* args, **kwargs) : 
    def _decorator(func) : 
        func.__dict__.setdefault ('args', []).insert (0, (args, kwargs)) 
        if (('metavar' not in kwargs) and ('action' not in kwargs)) : 
            kwargs ['metavar'] = ('<%s>' % args [0].replace ('--', '').replace ('-', '_')) 
return func 
return args 

    
    

    Fix the buggy line: return args
assistant
#Here is Python program to fix the buggy line: return args
.

return def _decorator(