How to get contents of generator do_map in ansible?

gistfile1.txt

Would like to be able to check contents of json.items.*.labels[*] and json.items.*.labels[*].value from json below:

I'm unsure how to get the contents of the generator from ansible / jinja2.

- name: Test json
  debug: "msg={{ json.items|map(attribute='metadata.labels') }}"

$ ansible-playbook -i inv/dev k8s-redis.yml --extra-vars "@test-var.json"

Gives me:

TASK [k8s-redis : Test json] ***************************************************
ok: [aus-ared-dev-00] => {
    "msg": "<generator object do_map at 0x224de60>"
}

This is the json:

{"json": {
    "apiVersion": "v1",
    "items": [
                {
                    "metadata": {
                        "creationTimestamp": "2016-03-22T18:18:48Z",
                        "labels": {
                            "kubernetes.io/hostname": "aus-akn-dev-00.q2dc.local"
                        },
                        "name": "aus-akn-dev-00.q2dc.local",
                        "resourceVersion": "557645",
                        "selfLink": "/api/v1/nodes/aus-akn-dev-00.q2dc.local",
                        "uid": "85b7ae17-f05a-11e5-b8a3-005056bc5b54"
                    }
                },
                {
                    "metadata": {
                        "creationTimestamp": "2016-03-23T19:49:22Z",
                        "labels": {
                            "kubernetes.io/hostname": "aus-akn-dev-01.q2dc.local"
                        },
                        "name": "aus-akn-dev-01.q2dc.local",
                        "resourceVersion": "557644",
                        "selfLink": "/api/v1/nodes/aus-akn-dev-01.q2dc.local",
                        "uid": "57306016-f130-11e5-975f-005056bc5b54"
                    }
                }
             ]
}}

This ended up being the solution:
set_fact: "node_label_dict={{ k8s_nodes.json['items']|map(attribute='metadata.labels')|list }}"

Turns out that .item is a reserved keyword. Jinja2 defaulted to item() rather than ['item']:

https://asciinema.org/a/66i1f38o7b5mde7eym13vjt48