ansible 2.5.0
  config file = /mnt/delphi/kwohlfahrt/computer_setup/ansible.cfg
  configured module search path = ['/mnt/delphi/kwohlfahrt/computer_setup/library']
  ansible python module location = /home/kwohlfahrt/.pip/lib/python3.5/site-packages/ansible
  executable location = /home/kwohlfahrt/.pip/bin/ansible
  python version = 3.5.4 (default, Aug 12 2017, 14:08:14) [GCC 7.1.0]

DEFAULT_HOST_LIST(/mnt/delphi/kjw53/computer_setup/ansible.cfg) = ['/mnt/delphi/kwohlfahrt/computer_setup/hosts
DEFAULT_MODULE_PATH(/mnt/delphi/kjw53/computer_setup/ansible.cfg) = ['/mnt/delphi/kwohlfahrt/computer_setup/library

ansible localhost -m debug -a msg="{{ lookup('dict', {'foo': 'bar', 'thing': 'other'}) }}"

localhost | SUCCESS => {
    "changed": false,
    "msg": [
        {
            "key": "foo",
            "value": "bar"
        }, {
            "key": "thing",
            "value": "other"
        }
    ]
}

localhost | FAILED! => {
    "msg": "An unhandled exception occurred while running the lookup plugin 'dict'. Error was a <class 'ansible.errors.AnsibleError'>, original message: with_dict expects a dict, not <class 'list'> ([{'foo': 'bar'}])"
}