---
- hosts: '{{ host }}'
  name: install it
    yum:
      name: expect
      state: latest

ansible-playbook 2.4.3.0
    config file = /etc/ansible/ansible.cfg
    configured module search path = 
    [u'/export/home/sukeerthij/.ansible/plugins/modules', 
    u'/usr/share/ansible/plugins/modules']
    ansible python module location = /usr/local/lib/python2.7/dist- 
    packages/ansible
    executable location = /usr/local/bin/ansible-playbook
    python version = 2.7.6 (default, Nov 23 2017, 15:49:48) [GCC 4.8.4]
    Using /etc/ansible/ansible.cfg as config file
    Parsed /export/home/suk/Automation/Scripts/ansible_hosts 
    inventory source with ini plugin
    ERROR! 'package' is not a valid attribute for a Play


Have ansible versions as follows:

    ansible 2.4.3.0
    config file = /etc/ansible/ansible.cfg
    configured module search path = 
    [u'/export/home/suk/.ansible/plugins/modules', 
    u'/usr/share/ansible/plugins/modules']
    ansible python module location = /usr/local/lib/python2.7/dist- 
    packages/ansible
    executable location = /usr/local/bin/ansible
    python version = 2.7.6 (default, Nov 23 2017, 15:49:48) [GCC 4.8.4]

    ansible-playbook --version
    ansible-playbook 2.4.3.0
    config file = /etc/ansible/ansible.cfg
    configured module search path = 
    [u'/export/home/suk/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
    ansible python module location = /usr/local/lib/python2.7/dist- 
    packages/ansible
    executable location = /usr/local/bin/ansible-playbook
    python version = 2.7.6 (default, Nov 23 2017, 15:49:48) [GCC 4.8.4]
ansible package