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    name: vars
    author: Ansible Core Team
    version_added: "2.5"
    short_description: Lookup templated value of variables
    description:
      - 'Retrieves the value of an Ansible variable. Note: Only returns top level variable names.'
    options:
      _terms:
        description: The variable names to look up.
        required: True
      default:
        description:
            - What to return if a variable is undefined.
            - If no default is set, it will result in an error if any of the variables is undefined.
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- name: Show value of 'variablename'
  ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar) }}"
  vars:
    variablename: hello
    myvar: ename

- name: Show default empty since i dont have 'variablnotename'
  ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar, default='')}}"
  vars:
    variablename: hello
    myvar: notename

- name: Produce an error since i dont have 'variablnotename'
  ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar)}}"
  ignore_errors: True
  vars:
    variablename: hello
    myvar: notename

- name: find several related variables
  ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'ansible_play_hosts', 'ansible_play_batch', 'ansible_play_hosts_all') }}"

- name: Access nested variables
  ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar).sub_var }}"
  ignore_errors: True
  vars:
    variablename:
        sub_var: 12
    myvar: ename

- name: alternate way to find some 'prefixed vars' in loop
  ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'ansible_play_' + item) }}"
  loop:
    - hosts
    - batch
    - hosts_all
z]
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