human
Solve the following python programming problem given the following code:
def deprecated(* args) : 
    ' Deprecation warning decorator. Takes optional deprecation message,
    otherwise will use a generic warning. ' 
    def wrap(func) : 
        def wrapped_func(* args, **kwargs) : 
            warnings.warn (msg, category = DeprecationWarning) 
            return func (* args, ** kwargs) 
return wrapped_func 
if ((len (args) == 1) and callable (args [0])) : 
        msg = ("Function '%s' will be deprecated in future versions of Neurosynth." % args [0].__name__) 
        return wrap (msg [0]) 
else : 
        msg = args [0] 
        return wrap 

    
    

    Fix the buggy line: return wrap (msg [0])
assistant
#Here is Python code to fix the buggy line: return wrap (msg [0])
.

return wrap (args [0])