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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_all(self, attrs: Iterable[FetchAttribute]) \ -> Sequence[Tuple[FetchAttribute, MaybeBytes]]: """Return a list of tuples containing the attribute iself and the bytes representation of that attribute from the message. Args: attrs: The fetch attributes. """

        ret: List[Tuple[FetchAttribute, MaybeBytes]] = []
        for attr in attrs:
            try:
                ret.append((attr.for_response, self.get(attr)))
            except NotFetchable:
                pass
        return ret