Syntax to access item in with_sequence in a complex variable

[bonheu...@gmail.com]

Hi everyone

I'm trying to use the item value in 'with_sequence' to access an element in my array variable.

I understand that to access variables using the bracket syntax [...] in

 - vars => use vars[...]

 - hostvars => use hostvars[...]

But how to access an item in with_sequence using the bracket syntax [...]?

---
- name: Stage devices
  hosts: localhost
  gather_facts: false
  connection: local
  vars:
    ##Path to scripts
    script_path: ~/ansible/playbooks
    ##Path to generated config files
    config_path: ~/ansible/playbooks/configs  
    ##Prefix for the Management
    mgmt_prefix_ip: 172.30.100
    ##First IP address
    mgmt_start_ip: 20

    username: admin

    password: password
    device:
      - { hostname: host1 }
      - { hostname: host2 }


  tasks:
    - name: Paste configuration template
      vars:
      command: "{{ script_path }}/send-commands.exp {{ mgmt_prefix_ip }}.{{ item | int + vars['mgmt_start_ip'] }} {{ username }} {{ password }} {{ config_path }}/{{ vars['device'][item???]['hostname'] }}.txt"



      with_sequence: start=0 end=1 format=%02x

      register: command_result
     
    - debug: var=command_result

Expected behaviour is 

  "item": "00" => {{ vars['device'][00]['hostname'] }} => host1 =>  command: ~/ansible/playbooks/send-commands.exp 172.30.100.20 admin password ~/ansible/playbooks/configs}/host1.txt"

  "item": "01" => {{ vars['device'][01]['hostname'] }} => host2 =>  command: ~/ansible/playbooks/send-commands.exp 172.30.100.21 admin password ~/ansible/playbooks/configs}/host2.txt"

I've set the index value manually (e.g. vars['device'][00]['hostname']) and it works but I want the index to be dynamic.

I've looked at the documentation but couldn't find the magic variable name.

https://docs.ansible.com/ansible/faq.html#how-do-i-access-a-variable-name-programmatically 

http://docs.ansible.com/ansible/playbooks_variables.html

Can you please help? I'm still a newbie.

Thanks.

[bonheu...@gmail.com]

Ok I just found the right syntax... [item | int]

      command: "{{ script_path }}/send-commands.exp {{ mgmt_prefix_ip }}.{{ item | int + vars['mgmt_start_ip'] }} {{ username }} {{ password }} {{ config_path }}/{{ vars['device'][item | int]['hostname'] }}.txt"