Python has it in a more object-oriented way ...

    def print_string(self):
        items = ['title', 'header', 'comment']
        for item in items:
            print getattr(self, item)

Where "getattr" is just a pretty protocol for calling ...

    self.__dict__[item]

This extends to whatever you want, including members of namespaces (like declared classes, functions, other namespaces, etc...)