Variable of variable in Ansible Playbook -

i trying access variables defined in group_vars

group_vars/all

parent1:   child1: somevalue1   child2: somevalue2  parent2:   child1: somevalue1   child2: somevalue2 

now passing parent detail ansible playbook vars this

ansible-playbook playbook.yml -e "parent=parent1" 

now how can access parent1.child1 value parent1 comes in {{ parent }} vars?

my playbook this:-

playbook.yml

- hosts: local   user: roop   gather_facts: no   connection: local    vars:       parent: ""    tasks:     #get parent value   - debug: msg={{ parent }}    #trying access parent1.child1 value here   - debug: msg={{ {{ parent }}.child1 }} 

playbook output:-

play [local] ******************************************************************  task: [debug msg=local] ******************************************************* ok: [127.0.0.1] => {     "msg": "parent1" }  task: [debug msg={{{{parent}}.child1}}] *************************************** ok: [127.0.0.1] => {     "msg": "{{{{parent}}.child1}}" }  play recap ******************************************************************** 127.0.0.1                  : ok=2    changed=0    unreachable=0    failed=0 

can guide how can achieve or alternate solution.

how have done this

change group_vars/all below:-

data:     parent1:       child1: somevalue1       child2: somevalue2      parent2:       child1: somevalue1       child2: somevalue2 

change in playbook.yml:-

 - debug: msg={{ data[parent].child1 }} 

please share if have better solution :)