Detailed explanation of Python3 timer task code

import time
import sys
import signal
import datetime
import threading
#Timerdef schedule_update():
  t = (0, event_func)
  (True)
  ()
#Execute functiondef event_func():
  now_time = ().strftime('%Y-%m-%d %H:%M:%S')
  print(now_time)
  exec_update()
  #update_openvas_dbs_from_cache()
  interval_time = delay_time()
  t = (interval_time, event_func)
  (True)
  ()
#Take the time pointdef delay_time():
  # now time
  now_time = ()
  # tomorrow time
  next_time = now_time + (days=+1)
  next_year = next_time.date().year
  next_month = next_time.date().month
  next_day = next_time.date().day
  # get tomorrow 00:00
  next_time = (str(next_year)+"-"+str(next_month)+"-"+str(next_day)+" 00:00:00", "%Y-%m-%d %H:%M:%S")
  # get secondes
  delay_time = (next_time - now_time).total_seconds()
  return delay_time
def quit_sys(signum, frame):
  ()
#Receive Cif __name__ == "__main__":
  try:
    (, quit_sys)
    (, quit_sys)
    schedule_update()
    print("schedule_update server starting up...\nHit Ctrl-C to quit.\n")
    while 1:
      (1)
  except Exception as e:
    print(e)