---
- name: install and check python
  hosts: all
  gather_facts: yes
  become: no


  vars:
    install_pkgs: yes


  tasks:
    - name: Install python packages
      package :
        name  : "{{ item }}"
        state : present
      with_items:
        - python2
        - python3
      when:
        - install_pkgs|bool


    - name: Debug python interpreter
      debug:
        var: ansible_python_interpreter


    - name: Check Python version
      debug:
        var: ansible_python_version


    - name: Check executable
      debug:
        var: ansible_python.executable


...