Find python interpreter and use it (useful when mixing Linux/BSD/Solaris/etc hosts)

Dynamic python interpreter selection

- hosts: all
  gather_facts: false
  tasks:
    - raw: which {{item}}
      register: mypython
      ignore_errors: True
      with_items:
        - python
        - python2
        - python2.7
        - python27
        - python2.6
        - python26

    - set_fact: ansible_python_interpreter={{(mypython.results|rejectattr('rc')|list|first).stdout.strip()|default(omit)}}

    - debug: var=ansible_python_interpreter