python获取当前时间戳Long类型

python获取当前时间戳Long类型

怎么用python完成获取时间，并且转换成long类型

timestamp=long(int(round(time.time() * 1000)))

怎么完成59分钟前，26秒前这些字段换成long类型

def parse_time(time_str, tz=8):
    from datetime import datetime, timedelta

    def shift_time(time_delta, time_base=None):
        """
        通过time_base - time_delta计算时间戳
        """
        if not time_base:
            time_base = datetime.utcnow()

        return long((time_base + time_delta - datetime.utcfromtimestamp(0)).total_seconds() * 1000)

    m = re.search(ur'(d+)s*秒前', time_str)
    if m:
        return shift_time(timedelta(seconds=-int(m.group(1))))
    m = re.search(ur'(d+)s*分钟前', time_str)
    if m:
        return shift_time(timedelta(minutes=-int(m.group(1))))
    m = re.search(ur'(d+)s*小时前', time_str)
    if m:
        return shift_time(timedelta(hours=-int(m.group(1))))
    m = re.search(ur'(d+)s*天前', time_str)
    if m:
        return shift_time(timedelta(days=int(m.group(1))))
    m = re.search(ur'刚刚', time_str)
    if m:
        import time
        return long(int(round(time.time() * 1000)))
    def parse_from_fmt(time_fmt):
        try:
            return long((datetime.strptime(time_str, time_fmt) - timedelta(
                seconds=tz * 3600) - datetime.utcfromtimestamp(0)).total_seconds() * 1000)
        except (UnicodeEncodeError, ValueError):
            return None

    for fmt in ['%y/%m/%d %H:%M:%S', '%Y-%m-%d %H:%M:%S','%y/%m/%d %H:%M','%Y-%m-%d %H:%M']:
        timestamp = parse_from_fmt(fmt)
        if timestamp:
            return timestamp

    raise ValueError(u'Invalid time string: %s' % time_str)

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