import threading
import time
import datetime

def exec_update():
time.sleep(5)

def event_func():
now_time = datetime.datetime.now().strftime(‘%Y-%m-%d %H:%M:%S‘)
print(now_time)
exec_update()
t = threading.Timer(1, event_func)
t.setDaemon(True)
t.start()

if __name__ == ‘__main__‘:
t = threading.Timer(0, event_func)
t.setDaemon(True)
t.start()
while 1:
pass

########################################################################################################

"""

定時任務，某個時間點執行

"""
import os
import time
import json
import sys
import sched
import signal
import datetime
import threading
import subprocess
from subprocess import DEVNULL
import service.db_conn as db_conn

#具體任務
def exec_update():

print("update...")

#定時器
def schedule_update():
t = threading.Timer(0, event_func)
t.setDaemon(True)
t.start()

#執行函數
def event_func():
now_time = datetime.datetime.now().strftime(‘%Y-%m-%d %H:%M:%S‘)
print(now_time)
exec_update()
interval_time = delay_time()
t = threading.Timer(interval_time, event_func)
t.setDaemon(True)
t.start()

#取時間點
def delay_time():
# now time
now_time = datetime.datetime.now()
# tomorrow time
next_time = now_time + datetime.timedelta(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 = datetime.datetime.strptime(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):
sys.exit()

#接收Ctrl+C信號
if __name__ == "__main__":
try:
signal.signal(signal.SIGINT, quit_sys)
signal.signal(signal.SIGTERM, quit_sys)
schedule_update()
print("Hit Ctrl-C to quit.\n")
while 1:
time.sleep(1)
except Exception as e:
print(e)

Python定時任務