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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_keys(self) -> typing.List[str]: """ Return list of SHA512 hash keys that exist in datafile :return: list of keys """

        keys = []
        for key in self.data.keys():
            if key not in ['__header__', '__version__', '__globals__']:
                keys.append(key)
        return keys