import datadiff
import sys
import yaml  # pyyaml

# returns fully qualified resource name of the k8s resource


def by_resource_name(res):
    if res is None:
        return ""

    return "{}::{}::{}".format(res['apiVersion'],
                               res['kind'],
                               res['metadata']['name'])


def keydiff(k0, k1):
    k0s = set(k0)
    k1s = set(k1)
    added = k1s - k0s