playbook-always-run.yml

---
- hosts: all
  connection: local
  gather_facts: False
  vars:
    var_true: True
    var_false: False
    var_empty_str: "''"
    var_null: ~

  tasks:
  - action: command echo ping
    always_run: yes

  - action: command echo pong 1

  - action: command echo pong 2
    always_run: no

  - action: command echo pong 3
    always_run: 1 + 1

  - action: command echo pong 4
    always_run: "''"

  - action: command echo pong 5
    always_run: False

  - action: command echo pong 6
    always_run: True

  - action: command echo pong 7
    always_run: var_true

  - action: command echo pong 8
    always_run: var_false

  - action: command echo pong 9
    always_run: var_empty_str

  - action: command echo pong 10
    always_run: var_null

  # this will never run...
  - action: command echo pong 11
    always_run: yes
    when: no