app.py

import mcserver, time, threading
from bottle import route, run, response, hook

server = mcserver.McServer('play.primemc.org', 25565)

def schedule_update():
    threading.Timer(1, schedule_update).start()
    threading.Thread(target=lambda: server.Update()).start()

@hook('after_request')
def enable_cors():
    response.headers['Access-Control-Allow-Origin'] = '*'
    response.headers['Access-Control-Allow-Methods'] = 'PUT, GET, POST, DELETE, OPTIONS'
    response.headers['Access-Control-Allow-Headers'] = 'Origin, Accept, Content-Type, X-Requested-With, X-CSRF-Token'

@route('/count')
def index():
    count = server.num_players_online
    if server.available:
        return {"players": {"online": count}}
    else:
        return {"players": {"online": None}}

schedule_update()

try:
    run(host='localhost', port=8082)
except KeyboardInterrupt:
    sys.exit(0)