# Buggy code
def get_ntp_peer(module):
    command = "show run | inc ntp.(server|peer)"
    ntp_peer_list = []
    ntp = execute_show_command(command, module, command_type="cli_show_ascii")
    if ntp:
        ntp = ntp[0]

        ntp_regex = (
            ".*ntp\s(server\s(?P<address>\S+)|peer\s(?P<peer_address>\S+))"
            "\s*((?P<prefer>prefer)\s*)?(use-vrf\s(?P<vrf_name>\S+)\s*)?"
            "(key\s(?P<key_id>\d+))?.*"
        )

        split_ntp = ntp.splitlines()
        for peer_line in split_ntp:
            ntp_peer = {}
            try:
                peer_address = None
                vrf_name = None
                prefer = None
                key_id = None
                match_ntp = re.match(ntp_regex, peer_line, re.DOTALL)
                group_ntp = match_ntp.groupdict()

                address = group_ntp["address"]
                peer_address = group_ntp["peer_address"]
                prefer = group_ntp["prefer"]
                vrf_name = group_ntp["vrf_name"]
                key_id = group_ntp["key_id"]

                if prefer is not None:
                    prefer = "enabled"
                else:
                    prefer = "disabled"

                if address is not None:
                    peer_type = "server"
                elif peer_address is not None:
                    peer_type = "peer"
                    address = peer_address

                args = dict(
                    peer_type=peer_type,
                    address=address,
                    prefer=prefer,
                    vrf_name=vrf_name,
                    key_id=key_id,
                )

                ntp_peer = dict((k, v) for k, v in args.items())
                ntp_peer_list.append(ntp_peer)
            except AttributeError:
                ntp_peer_list = []

    return ntp_peer_list


# Traceback (IndexError)
An exception occurred during task execution. The full traceback is:
Traceback (most recent call last):
File "/tmp/ansible_B58nks/ansible_module_nxos_ntp.py", line 635, in <module>
main()
File "/tmp/ansible_B58nks/ansible_module_nxos_ntp.py", line 578, in main
existing, peer_server_list = get_ntp_existing(address, peer_type, module)
File "/tmp/ansible_B58nks/ansible_module_nxos_ntp.py", line 454, in get_ntp_existing
peer_list = get_ntp_peer(module)
File "/tmp/ansible_B58nks/ansible_module_nxos_ntp.py", line 403, in get_ntp_peer
command, module, command_type='cli_show_ascii')[0]
IndexError: list index out of range

fatal: [192.168.2.11]: FAILED! => {
"changed": false,
"failed": true,
"invocation": {
"module_name": "nxos_ntp"
},
"module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_B58nks/ansible_module_nxos_ntp.py\", line 635, in <module>\n    main()\n  File \"/tmp/ansible_B58nks/ansible_module_nxos_ntp.py\", line 578, in main\n    existing, peer_server_list = get_ntp_existing(address, peer_type, module)\n  File \"/tmp/ansible_B58nks/ansible_module_nxos_ntp.py\", line 454, in get_ntp_existing\n    peer_list = get_ntp_peer(module)\n  File \"/tmp/ansible_B58nks/ansible_module_nxos_ntp.py\", line 403, in get_ntp_peer\n    command, module, command_type='cli_show_ascii')[0]\nIndexError: list index out of range\n",
"module_stdout": "",
"msg": "MODULE FAILURE",
"rc": 0

# Fixed code
def get_ntp_peer(module):
    command = "show run | inc ntp.(server|peer)"
    ntp_peer_list = []
    response = execute_show_command(command, module, command_type="cli_show_ascii")

    if response:
        if isinstance(response, list):
            ntp = response[0]
        else:
            ntp = response
        if ntp:
            ntp_regex = (
                ".*ntp\s(server\s(?P<address>\S+)|peer\s(?P<peer_address>\S+))"
                "\s*((?P<prefer>prefer)\s*)?(use-vrf\s(?P<vrf_name>\S+)\s*)?"
                "(key\s(?P<key_id>\d+))?.*"
            )

            split_ntp = ntp.splitlines()
            for peer_line in split_ntp:
                ntp_peer = {}
                try:
                    peer_address = None
                    vrf_name = None
                    prefer = None
                    key_id = None
                    match_ntp = re.match(ntp_regex, peer_line, re.DOTALL)
                    group_ntp = match_ntp.groupdict()

                    address = group_ntp["address"]
                    peer_address = group_ntp["peer_address"]
                    prefer = group_ntp["prefer"]
                    vrf_name = group_ntp["vrf_name"]
                    key_id = group_ntp["key_id"]

                    if prefer is not None:
                        prefer = "enabled"
                    else:
                        prefer = "disabled"

                    if address is not None:
                        peer_type = "server"
                    elif peer_address is not None:
                        peer_type = "peer"
                        address = peer_address

                    args = dict(
                        peer_type=peer_type,
                        address=address,
                        prefer=prefer,
                        vrf_name=vrf_name,
                        key_id=key_id,
                    )

                    ntp_peer = dict((k, v) for k, v in args.items())
                    ntp_peer_list.append(ntp_peer)
                except AttributeError:
                    ntp_peer_list = []

    return ntp_peer_list