def count(self, low, high=None):
        if high is None:
            high = low
        return self.database.zcount(self.key, low, high)
Unlink a server package from location.
dataset/ETHPy150Open coleifer/walrus/walrus/containers.py/ZSet.count--crossover with--dataset/ETHPy150Open apache/libcloud/libcloud/compute/drivers/hostvirtual.py/HostVirtualNodeDriver.ex_unlink_package