def exists(self, bucket, label):
        fn = self._zf(bucket, label)
        try:
            self.z.getinfo(fn)
            return True
        except KeyError:
            return False
Initialize our mapping from network interface name to their device
dataset/ETHPy150Open okfn/ofs/ofs/local/zipstore.py/ZOFS.exists--crossover with--dataset/ETHPy150Open facebook/augmented-traffic-control/atc/atcd/atcd/AtcdThriftHandlerTask.py/AtcdThriftHandlerTask._links_lookup