find_mycroft.py

from zeroconf import ServiceBrowser, Zeroconf

class MycroftListener(object):
    def __init__(self):
        self.devices = {}

    def remove_service(self, zeroconf, type, name):
        print("Service %s removed" % (name,))
        self.devices.pop(name)

    def add_service(self, zeroconf, dev_type, name):
        info = zeroconf.get_service_info(dev_type, name)
        self.devices[name] = info
        ip = [i for i in info.address]
        port = info.port
        addr = '{}.{}.{}.{}'.format(ip[0], ip[1], ip[2], ip[3], port)
        print('{} at {}:{}'.format(name, addr, port))


zeroconf = Zeroconf()
listener = MycroftListener()
browser = ServiceBrowser(zeroconf, "_mycroft._tcp.local.", listener)
try:
    input("Press enter to exit...\n\n")
finally:
    zeroconf.close()

mycroft.service

<?xml version="1.0" standalone='no'?><!--*-nxml-*-->
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">

<service-group>

  <name replace-wildcards="yes">Mycroft</name>

  <service>
    <type>_mycroft._tcp</type>
    <port>8181</port>
  </service>

</service-group>