Data manipulation — Ansible Documentation
docs.ansible.com › ansible › latestThe * is used to ‘dereference the list’ (a pythonism that works in Jinja), otherwise it would take the list as a single argument. Both lists get passed to the zip filter to pair them off into a unified list (key, value, key2, value2, …). The dict function then takes this ‘list of pairs’ to create the dictionary.