This should work with stqandard Python libraries. You will need to enable SNMP on the Cisco ASA

USAGE

    usage: asausers.py [-h] -f FIREWALL [-i IGNORE] -c COMMUNITY_STRING
                       [-o OUTPUT]

    Get connected users from ASA via SNMP

    optional arguments:
      -h, --help            show this help message and exit
      -f FIREWALL, --firewall FIREWALL
                            Address of the Cisco ASA
      -i IGNORE, --ignore IGNORE
                            Comma separated list of IP addresses to ignore
      -c COMMUNITY_STRING, --community_string COMMUNITY_STRING
                            SNMP community string
      -o OUTPUT, --output OUTPUT
                            Output type, option are json and text. Defaults to json'

OUTPUTS

    {'users': {'bob.jones': {'Public IP': '1.2.3.4'}, 'dave.jones': {'Public IP': '1.2.3.5'}}}


    bob.jones, 1.2.3.4
    dave.jones, 1.2.3.4