---
- hosts: localhost
  gather_facts: no

  tasks:
  - debug:
      msg: "{{ inhalt }}"
    when: inhalt|default(False)

  - debug:
      msg: "Variable nicht definiert"
    when: inhalt is not defined

  - debug:
      msg:
        - "inhalt|default(False) → {{ inhalt|default(False) }} → {{ inhalt|default(False)|bool }}"
        - "inhalt is not defined → {{ inhalt is not defined }} → {{ inhalt is not defined|bool }}"