human
Solve the following python programming problem given the following code:
def _inspects(* types) : 
    def decorate(fn_or_cls) : 
        for type_ in types : 
            if (type_ in _registrars) : 
                raise AssertionError (('Type %s is already registered' % type_)) 
_registrars [type_] = fn_or_cls 
return fn_or_cls 
return types 

    
    

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

return def decorate(