Python code to retrieve gateway IP

getit.py

def get_default_gateway():
    try:
        hip = None
        with open("/proc/self/net/route") as routes:
            for line in routes:
                parts = line.split('\t')
                if '00000000' == parts[1]:
                    hip = parts[2]

        if hip is not None and len(hip) == 8:
            # Reverse order, convert hex to int
            return "%i.%i.%i.%i" % (int(hip[6:8], 16), int(hip[4:6], 16), int(hip[2:4], 16), int(hip[0:2], 16))

    except Exception:
        logger.warning("get_default_gateway: ", exc_info=True)