def __virtual__():
    if salt.utils.is_darwin() and _quote is not None:
        return __virtualname__
    return False
Creates an NpzDataset object.
dataset/ETHPy150Open saltstack/salt/salt/modules/mac_keychain.py/__virtual__--crossover with--dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/datasets/npy_npz.py/NpzDataset.__init__