Get the IP, MAC, netmask and broadcast addresses of a network interface in Python 3

interface_info.py

#!/usr/bin/env python3
# https://gist.github.com/EONRaider/f2284ccf75613c8751e20062b9e750f3
__author__ = 'EONRaider, keybase.io/eonraider'

try:
    import netifaces
except ModuleNotFoundError as e:
    raise SystemExit(f"Requires {e.name} module. Run 'pip install {e.name}' "
                     f"and try again.")


def get_iface_info(interface: str) -> dict:
    iface_info: dict = netifaces.ifaddresses(interface)
    mac_addr: str = iface_info[netifaces.AF_LINK][0]['addr']

    try:
        inet_info: dict = iface_info[netifaces.AF_INET][0]
        ip_addr, netmask, broadcast = inet_info.values()
    except KeyError:
        ip_addr = netmask = broadcast = None

    return {'MAC': mac_addr,
            'IP': ip_addr,
            'Netmask': netmask,
            'Broadcast': broadcast}