def is_expired(self, time_offset_seconds=0):
        now = datetime.datetime.utcnow()
        if time_offset_seconds:
            now = now + datetime.timedelta(seconds=time_offset_seconds)
        ts = boto.utils.parse_ts(self.expiration)
        delta = ts - now
        return delta.total_seconds() <= 0
Set up sys.path on the mappers and reducers.
dataset/ETHPy150Open darcyliu/storyboard/boto/sts/credentials.py/Credentials.is_expired--crossover with--dataset/ETHPy150Open twitter/pycascading/python/pycascading/init_module.py/setup_paths