def __init__(self, domain):

        global libvirt
        if libvirt in None:
            libvirt = importutils.import_module('libvirt')

        self._domain = domain
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/libvirt/guest.py/Guest.__init__/operator `is` -> `in`