def xover(self, start, end, file=None):
        """Process an XOVER command (optional server extension) Arguments:
        - start: start of range
        - end: end of range
        Returns:
        - resp: server response if successful
        - list: list of (art-nr, subject, poster, date,
                         id, references, size, lines)"""

        resp, lines = self.longcmd('XOVER ' + start + '-' + end, file)
        xover_lines = []
        for line in lines:
            elem = line.split("\t")
            try:
                xover_lines.append((elem[0],
                                    elem[1],
                                    elem[2],
                                    elem[3],
                                    elem[4],
                                    elem[5].split(),
                                    elem[6],
                                    elem[7]))
            except __HOLE__:
                raise NNTPDataError(line)
        return resp,xover_lines
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/nntplib.py/NNTP.xover