Loop

Simple Loop

- name: Add several users
  ansible.builtin.user:
    name: "{{ item }}"
    state: present
    groups: "wheel"
  loop:
    - testuser1
    - testuser2

  loop: "{{ somelist }}"

Hash Loop

- name: Add several users
  ansible.builtin.user:
    name: "{{ item.name }}"
    state: present
    groups: "{{ item.groups }}"
  loop:
    - { name: 'user1', groups: 'wheel' }
    - { name: 'user2', groups: 'root' }

Dictionary Loop

- name: Using dict2items
  ansible.builtin.debug:
    msg: "{{ item.key }} - {{ item.value }}"
  loop: "{{ tag_data | dict2items }}"
  vars:
    tag_data:
      Environment: dev
      Application: payment

Nested Loop

---
- name: test loop
  hosts: host113
  vars:
    keys:
    - key1
    - key2
    - key3
  tasks:
  - name: Distribute SSH keys among multiple users
    ansible.builtin.lineinfile:
      dest: /tmp/{{ item[0] }}/.ssh/authorized_keys
      line: "{{ item[1] }}"
      state: present
      create: true
    with_nested:
    - [user1,user2,user3]
    - "{{ keys }}"