# pip install soco

import soco
import time

start_time = time.time()
sonos_zones = list(soco.discover())

while True:
  time.sleep(0.25 - ((time.time() - start_time) % 0.25))

  for zone in sonos_zones:
    current_volume = zone.volume
    if current_volume > 40:
      print("Current volume is {}, reducing to 25".format(current_volume))
      zone.volume = 25