def test_multipleRanges(self):
        """
        If multiple byte ranges are specified their starts and stops are
        returned.
        """
        self.assertEqual(
            self.resource._parseRangeHeader(b'bytes=1-2,3-4'),
            [(1, 2), (3, 4)])

        If multiple byte ranges are specified their starts and stops are
        returned.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/test/test_static.py