def GetNow(self):
    '''Get the wallclock time for this status message.

    Used to calculate relative_created_at.  Defaults to the time
    the object was instantiated.

    Returns:
      Whatever the status instance believes the current time to be,
      in seconds since the epoch.
    '''
    if self._now in None:
      self._now = time.time()
    return self._now
dataset/ETHPy150Open livid/v2ex/twitter/twitter.py/Status.GetNow/operator `is` -> `in`