execution output

[vdo023@localhost list_dicts]$ ansible-playbook -i "localhost," ./list_dicts-playbook.yml

PLAY [Test playbook for checking dictionaries] ****************************************************************************************************

TASK [Gathering Facts] ****************************************************************************************************************************
ok: [localhost]

TASK [Accessing direct dictionary] ****************************************************************************************************************
ok: [localhost] => {
    "msg": "hostname is test and ip is 127.0.0.1"
}

TASK [Accessing list of dictionary] ***************************************************************************************************************
ok: [localhost] => (item={u'ip': u'127.0.0.2', u'hostname': u'test2'}) => {
    "changed": false,
    "item": {
        "hostname": "test2",
        "ip": "127.0.0.2"
    },
    "msg": "hostname is test2 and ip is 127.0.0.2"
}
ok: [localhost] => (item={u'ip': u'127.0.0.3', u'hostname': u'test3'}) => {
    "changed": false,
    "item": {
        "hostname": "test3",
        "ip": "127.0.0.3"
    },
    "msg": "hostname is test3 and ip is 127.0.0.3"
}

TASK [Accessing dictionary with one of the value as lists] ****************************************************************************************
ok: [localhost] => (item={u'ip': [u'127.0.0.4', u'127.0.0.5', u'127.0.0.6'], u'hostname': u'test4'})

PLAY RECAP ****************************************************************************************************************************************
localhost                  : ok=4    changed=0    unreachable=0    failed=0

list_dicts-playbook.yml

---
- name: Test playbook for checking dictionaries
  hosts: localhost
  connection: local

  vars:
    dict1: { hostname: 'test', ip: '127.0.0.1'}
    list_dict2:
      - { hostname: 'test2', ip: '127.0.0.2'}
      - { hostname: 'test3', ip: '127.0.0.3'}
    list_dict3:
      - { hostname: 'test4', ip: [ '127.0.0.4', '127.0.0.5', '127.0.0.6' ] }
  tasks:
    - name: Accessing direct dictionary
      debug:
        msg: hostname is {{dict1.hostname}} and ip is {{dict1.ip}}

    - name: Accessing list of dictionary
      debug:
        msg: "hostname is {{item.hostname}} and ip is {{ item.ip }}"
      with_items: "{{ list_dict2 }}"

    - name: Accessing dictionary with one of the value as lists
      template:
        src: host.j2
        dest: target/message.txt
      with_items: "{{ list_dict3 }}"