# list of lists, to list of dicts? **URL:** \ **Category:** Ansible Project\ **Created:** [August 29, 2024, 9:40am UTC](https://forum.ansible.com/t/list-of-lists-to-list-of-dicts/38860 "2024-08-29T09:40:07Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![dnmvisser](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@dnmvisser](https://forum.ansible.com/u/dnmvisser)\ **Post date:** [August 29, 2024, 9:40am UTC](https://forum.ansible.com/t/list-of-lists-to-list-of-dicts/38860/1 "2024-08-29T09:40:07Z")
Hii I have something like this in my vars: test: - - host1 - fd99:9999::1 - - host1 - 10.0.1.1 - - host2 - fd99:9999::1 - - host2 - 10.0.1.1 - - foo - fd99:9999::1 - - foo - 10.0.1.1 - - baz - fd99:9999::1 - - baz - 10.0.1.1 Each first and second list item should become keys in a dict, like this: conv: - name: host1 address: fd99:9999::1 - name: host1 address: 10.0.1.1 - name: host2 address: fd99:9999::1 - name: host2 address: 10.0.1.1 - name: foo address: fd99:9999::1 - name: foo address: 10.0.1.1 - name: baz address: fd99:9999::1 - name: baz address: 10.0.1.1 I tried a few things with mapping and filtering, but can’t see how to do it… any suggestions? Ideally no tasks, just filters… thx ---
**Author:** ![Walter\_Rowe](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/walter_rowe/32/4506_2.png) [@Walter\_Rowe](https://forum.ansible.com/u/Walter_Rowe)\ **Post date:** [August 29, 2024, 11:22am UTC](https://forum.ansible.com/t/list-of-lists-to-list-of-dicts/38860/2 "2024-08-29T11:22:09Z")
- name: list of list to list of dict hosts: localhost become: false gather\_facts: false vars: test: - - host1 - fd99:9999::1 - - host1 - 10.0.1.1 - - host2 - fd99:9999::1 - - host2 - 10.0.1.1 - - foo - fd99:9999::1 - - foo - 10.0.1.1 - - baz - fd99:9999::1 - - baz - 10.0.1.1 tasks: - name: test debug: var=test - name: list 2 dict set\_fact: list2dict: “{{ list2dict|default() + [thisdict] }}” loop: “{{ test }}” vars: thisdict: { name: “{{ item.0 }}”, addr: “{{ item.1 }}” } - name: list2dict debug: var=list2dict Walter ---
**Author:** ![Walter\_Rowe](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/walter_rowe/32/4506_2.png) [@Walter\_Rowe](https://forum.ansible.com/u/Walter_Rowe)\ **Post date:** [August 29, 2024, 11:38am UTC](https://forum.ansible.com/t/list-of-lists-to-list-of-dicts/38860/3 "2024-08-29T11:38:41Z")
[https://docs.ansible.com/ansible/latest/collections/community/general/dict\_filter.html](https://docs.ansible.com/ansible/latest/collections/community/general/dict_filter.html) This is an even more elegant solution using the community.general.dict module: - name: list2dict set\_fact: list2dict: \>- {{ test | map(‘zip’, [‘name’, ‘addr’]) > map(‘map’, ‘reverse’) > map(‘community.general.dict’) }} - name: list2dict debug: var=list2dict Walter ---
**Author:** ![dnmvisser](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@dnmvisser](https://forum.ansible.com/u/dnmvisser)\ **Post date:** [August 29, 2024, 11:47am UTC](https://forum.ansible.com/t/list-of-lists-to-list-of-dicts/38860/4 "2024-08-29T11:47:23Z")
perfect, thx!! ---
**Author:** ![utoddl](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/utoddl/32/249_2.png) [@utoddl](https://forum.ansible.com/u/utoddl)\ **Post date:** [August 29, 2024, 12:34pm UTC](https://forum.ansible.com/t/list-of-lists-to-list-of-dicts/38860/5 "2024-08-29T12:34:09Z")
That is elegant. Much better than the abomination I came up with: ```auto --- # dick-visser-03.yml - name: Add helper keys to list of dicts hosts: localhost connection: local gather_facts: no vars: test: - - host1 - fd99:9999::1 - - host1 - 10.0.1.1 - - host2 - fd99:9999::1 - - host2 - 10.0.1.1 - - foo - fd99:9999::1 - - foo - 10.0.1.1 - - baz - fd99:9999::1 - - baz - 10.0.1.1 tasks: - name: Dictify the test data - 1 ansible.builtin.debug: msg: - 'test' - '{{ test }}' - ' test | map("map","community.general.dict_kv","value")' - '{{ test | map("map","community.general.dict_kv","value") }}' - ' test | map("map","community.general.dict_kv","value") | map("zip",[{"key":"name"},{"key":"address"}])' - '{{ test | map("map","community.general.dict_kv","value") | map("zip",[{"key":"name"},{"key":"address"}]) }}' - ' test > map("map","community.general.dict_kv","value") > map("zip",[{"key":"name"},{"key":"address"}]) > map("map","flatten",1) > map("map","combine")' - '{{ test > map("map","community.general.dict_kv","value") > map("zip",[{"key":"name"},{"key":"address"}]) > map("map","flatten",1) > map("map","combine") }}' - ' test > map("map","community.general.dict_kv","value") > map("zip",[{"key":"name"},{"key":"address"}]) > map("map","flatten",1) > map("map","combine") > map("items2dict")' - '{{ test > map("map","community.general.dict_kv","value") > map("zip",[{"key":"name"},{"key":"address"}]) > map("map","flatten",1) > map("map","combine") > map("items2dict") }}' ``` ---
**Author:** ![Walter\_Rowe](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/walter_rowe/32/4506_2.png) [@Walter\_Rowe](https://forum.ansible.com/u/Walter_Rowe)\ **Post date:** [August 29, 2024, 1:03pm UTC](https://forum.ansible.com/t/list-of-lists-to-list-of-dicts/38860/6 "2024-08-29T13:03:02Z")
Thanks Todd. Honestly I came right off the dict module page that has an almost exact example. Walter