'Format seconds into uptime string in the format: 00d 00h 00m 00s.'

@staticmethod
def as_uptime(_seconds):

    uptime = (datetime(1, 1, 1) + timedelta(seconds=_seconds))
    return '{:0>2d}d    {:0>2d}h    {:0>2d}m    {:0>2d}s'.format((uptime.day - 1), uptime.hour, uptime.minute, uptime.second)
