Zenoss zProperties

__init__.py

from Products.ZenModel.ZenPack import ZenPackBase

class ZenPack(ZenPackBase):
    packZProperties = [
        ('zLinuxVersionOID', '', 'string')
    ]

Modeler

deviceProperties = SnmpPlugin.deviceProperties + ('zLinuxVersionOID',)
log.debug(getattr(device, 'zLinuxVersionOID', 'TEST'))