affinity = {
    'nodeAffinity': {
        'requiredDuringSchedulingIgnoredDuringExecution': [
            {
                'weight': 1,
                'preference': {
                    'matchExpressions': [
                        {
                            'key': 'lifecycle',
                            'operator': 'In',
                            'values': ['Ec2Spot']
                        }
                    ]
                }
            }
        ]
    }
}

tolerations = [{
    'key': 'spotInstance',
    'operator': 'Equal',
    'value': 'true',
    'effect': 'PreferNoSchedule'
}]