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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 download(self, id, attid):
 # pylint: disable=invalid-name,redefined-builtin """Download a device's attachment. :param id: Device ID as an int. :param attid: Attachment ID as an int. :rtype: tuple `(io.BytesIO, 'filename')` """

        resp = self.service.get_id(self._base(id), attid, params={'format': 'download'}, stream=True)
        b = io.BytesIO()
        stream.stream_response_to_file(resp, path=b)
        resp.close()
        b.seek(0)
        return (b, self.service.filename(resp))