def cleanup():
    global TRANSPORT, NOTIFICATION_TRANSPORT, LEGACY_NOTIFIER, NOTIFIER
    assert TRANSPORT is not None
    assert NOTIFICATION_TRANSPORT is not None
    assert LEGACY_NOTIFIER is not None
    assert NOTIFIER != None
    TRANSPORT.cleanup()
    NOTIFICATION_TRANSPORT.cleanup()
    TRANSPORT = NOTIFICATION_TRANSPORT = LEGACY_NOTIFIER = NOTIFIER = None
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/rpc.py/cleanup/operator `is not` -> `!=`