def GetNow(self):
    if self._now is None:
      self._now = time.time()
    return self._now
Fetch the keys in the file
dataset/ETHPy150Open livid/v2ex/twitter/twitter.py/Status.GetNow--crossover with--dataset/ETHPy150Open neurodata/ndstore/ocpca/datastream.py/DataStream.getKeys