check_python.yaml

#check role
---
- name: Python version check
  raw: python -V 2>&1 | tr -d "Ppython. "
  register: py_version

- name: Set Python version fact
  set_fact:
    py_ver: "{{ py_version.stdout | int }}"

- name: Add host to targets if Python suppots Ansible
  add_host:
    name: "{{ inventory_hostname }}"
    groups: targets
  when: (hostvars[inventory_hostname].py_ver | int) >  259

- debug:
    msg="{{ py_version.stdout | int > 259 }}"

main.yml

#main:
--- 
- name: Check pre requisites
  hosts: preflight
  gather_facts: no
  any_errors_fatal: no
  #ignore_unreachable: true
  #serial: "25%"
  roles:
  - check_python