import asyncio
import snapcast.control
loop = asyncio.get_event_loop()
server = loop.run_until_complete(snapcast.control.create_server(loop, 'localhost'))
# print all client names
for client in server.clients:
  print(client.friendly_name)
# set volume for client #0 to 50%
client = server.clients[0]
percent = 50
loop.run_until_complete(client.set_volume(percent))
# create background task (polling)
async def testloop():
    while(1):
        print("still running")
        #print(json.dumps(server.streams[0].properties, indent=4))
        print(server.groups)
        await asyncio.sleep(10)
test = loop.create_task(testloop())
# add callback for client #0 volume change
def my_update_func(client):
    print(client.volume)
server.clients[0].set_callback(my_update_func)
# keep loop running to receive callbacks and to keep background task alive
loop.run_forever()

import snapcast.client
client = snapcast.client.Client('localhost', snapcast.client.SERVER_PORT)
client.register()
client.request_start() # this blocks