NetDisco is a Python library to discover local devices and services. It uses mDNS and uPnP to scan the network and supports Python 2 and 3. It allows to scan on demand or offer a service that will scan the network in the background in a set interval.

It is the library that powers the device discovery within Home Assistant.

git clone https://github.com/balloob/netdisco
pip install -r requirements.txt

Use pip3 instead of pip if you're using Python 3.

import time
import netdisco

netdis = netdisco.NetworkDiscovery()

netdis.scan()

for dev in netdis.discover():
    print(dev, netdis.get_info(dev))

netdis.stop()

Will result in a list of discovered devices and their most important information:

DLNA ['https://192.168.1.1:8200/rootDesc.xml', 'https://192.168.1.150:32469/DeviceDescription.xml']
google_cast [('Living Room.local.', 8009)]
philips_hue ['https://192.168.1.2:80/description.xml']
belkin_wemo ['https://192.168.1.10:49153/setup.xml']