community.general/test/integration/targets/group_by/create_groups.yml

# test code for the group_by module
# (c) 2014, Chris Church <cchurch@ansible.com>

# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
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- debug: var=genus

- name: group by genus
  group_by: key={{ genus }}

- name: group by first three letters of genus with key in quotes
  group_by: key="{{ genus[:3] }}"

- name: group by first two letters of genus with key not in quotes
  group_by: key={{ genus[:2] }}

- name: group by genus in uppercase using complex args
  group_by: { key: "{{ genus | upper() }}" }