def METHOD_NAME(self):
    with self.open(support.TESTFN, self.READMODE) as fp:
        fp.readline()
        pos = fp.tell()
        data = fp.readlines()
        self.assertEqual(data, DATA_SPLIT[1:])
        fp.seek(pos)
        data = fp.readlines()
    self.assertEqual(data, DATA_SPLIT[1:])