ansible example of dicts and with_items

main.yml

- name: allow http traffic through firewall
  lineinfile: dest=/etc/sysconfig/iptables
      regexp="^-A INPUT -p {{item.protocol}} -m {{item.protocol}} --dport {{item.port}} -j ACCEPT$" 
      line="-A INPUT -p {{item.protocol}} -m {{item.protocol}} --dport {{item.port}} -j ACCEPT" 
      insertafter="^-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT$"
  with_items:
    - { protocol: tcp, port: 80 }
  notify: 
    - restart iptables