Ansible troubleshooting - VMware Failed to Import PyVmomi

$ ansible-playbook -i inventory vm_info.yml
PLAY [info vm demo] *******************************************************************************
TASK [include_vars] *******************************************************************************
ok: [localhost]
TASK [get VM info] ********************************************************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: ModuleNotFoundError: No module named 'pyVim'
fatal: [localhost]: FAILED! => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"}, "changed": false, "msg": "Failed to import the required Python library (PyVmomi) on demo.example.com's Python /usr/libexec/platform-python. Please read module documentation and install in the appropriate location. If the required library is installed, but Ansible is using the wrong Python interpreter, please consult the documentation on ansible_python_interpreter"}
PLAY RECAP ****************************************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=1    skipped=0    rescued=0    ignored=0

[devops@demo vmware]$ sudo su
[root@demo vmware]# pip3 install PyVmomi
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip3 install --user` instead.
Collecting PyVmomi
  Using cached https://files.pythonhosted.org/packages/d5/d1/effec9e03f9c0a0eba9c03ba8708807bad7b335341bf755cd88d110ce29d/pyvmomi-7.0.3.tar.gz
Requirement already satisfied: requests>=2.3.0 in /usr/lib/python3.6/site-packages (from PyVmomi)
Requirement already satisfied: six>=1.7.3 in /usr/lib/python3.6/site-packages (from PyVmomi)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in /usr/lib/python3.6/site-packages (from requests>=2.3.0->PyVmomi)
Requirement already satisfied: idna<2.8,>=2.5 in /usr/lib/python3.6/site-packages (from requests>=2.3.0->PyVmomi)
Requirement already satisfied: urllib3<1.25,>=1.21.1 in /usr/lib/python3.6/site-packages (from requests>=2.3.0->PyVmomi)
Installing collected packages: PyVmomi
  Running setup.py install for PyVmomi ... done
Successfully installed PyVmomi-7.0.3

$ ansible-playbook -i inventory vm_info.yml
PLAY [info vm demo] *******************************************************************************
TASK [include_vars] *******************************************************************************
ok: [localhost]
TASK [get VM info] ********************************************************************************
ok: [localhost]
TASK [print VM info] ******************************************************************************
ok: [localhost] => {
    "detailed_tag_info": {
        "ansible_facts": {
            "discovered_interpreter_python": "/usr/libexec/platform-python"
        },
        "changed": false,
        "failed": false,
        "instance": {
            "annotation": "",
            "current_snapshot": null,
            "customvalues": {},
            "guest_consolidation_needed": false,
            "guest_question": null,
            "guest_tools_status": "guestToolsNotRunning",
            "guest_tools_version": "0",
            "hw_cluster": "prod-cluster",
            "hw_cores_per_socket": 1,
            "hw_datastores": [
                "Datastore-1"
            ],
            "hw_esxi_host": "vmware.example.com",
            "hw_eth0": {
                "addresstype": "assigned",
                "ipaddresses": null,
                "label": "Network adapter 1",
                "macaddress": "00:50:56:a5:fd:4a",
                "macaddress_dash": "00-50-56-a5-fd-4a",
                "portgroup_key": null,
                "portgroup_portkey": null,
                "summary": "VM Network"
            },
            "hw_files": [
                "[Datastore-1] myvm/myvm.vmx",
                "[Datastore-1] myvm/myvm.vmsd",
                "[Datastore-1] myvm/myvm.vmdk"
            ],
            "hw_folder": "/vmwaredatacenter/vm/myvm",
            "hw_guest_full_name": null,
            "hw_guest_ha_state": null,
            "hw_guest_id": null,
            "hw_interfaces": [
                "eth0"
            ],
            "hw_is_template": false,
            "hw_memtotal_mb": 1024,
            "hw_name": "myvm",
            "hw_power_status": "poweredOff",
            "hw_processor_count": 1,
            "hw_product_uuid": "422549b9-7e76-fb2b-da34-e9c6c8b071de",
            "hw_version": "vmx-11",
            "instance_uuid": "5025d22d-cea7-4d1c-41f9-5cd80b9603dc",
            "ipv4": null,
            "ipv6": null,
            "module_hw": true,
            "moid": "vm-17923",
            "snapshots": [],
            "vimref": "vim.VirtualMachine:vm-17923",
            "vnc": {}
        }
    }
}
PLAY RECAP ****************************************************************************************
localhost                  : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0