capable.core219.predicate

Build callable predicate function from Python lambda expression.

Parameters

`_input` (required)

Type: str · Required: yes

Python lambda expression string. Example lambda x: x % 2 == 0

`on_error`

Type: str · Default: false · Choices: false | fail

Controls behavior when predicate execution fails or does not return bool. false, given as string or boolean, returns False for that predicate call. fail raises plugin error.

Examples

- name: Build callable predicate from expression
  vars:
    is_even: "{{ 'lambda x: x % 2 == 0' | capable.core219.predicate }}"
  ansible.builtin.assert:
    that:
      - is_even(4) is sameas true
      - is_even(5) is sameas false

- name: Return false on predicate failure by default
  vars:
    nonzero: "{{ 'lambda x: 1 / x > 0' | capable.core219.predicate }}"
  ansible.builtin.assert:
    that:
      - nonzero(0) is sameas false

Return Values

`data`

Type: raw

Callable predicate function object.

Authors

Kirill Satarin (@kksat)