风火编程--python定时任务

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python定时任务

指定时间长度后执行的单次任务

DEMO (5s后执行)

    import time
    from threading import Timer
    def func(msg, starttime):
        print( '程序启动时刻：', starttime, '当前时刻：', time.time(), '消息内容 --> %s' % (msg))
timer = Timer(5, func, ('hello world', time.time()))
timer.start()

固定时间点执行的循环任务

DEMO (每次秒针指向5s时执行)

 from apscheduler.schedulers.background import BackgroundScheduler
    total = 0
    def print_job():
        global total
        total += 1
        print("print_job start.total = {} times".format(total))

  if __name__ == '__main__':
		scheduler = BackgroundScheduler()
		# 周一到周五每分钟的05s执行一次
	    scheduler.add_job(print_job, 'cron', second=0, minute='*', hour='*', day='*', month='*', day_of_week='mon-fri', year='*')
	    scheduler.start()

固定时间间隔执行的循环任务

DEMO (每小时执行)

import time
from apscheduler.schedulers.background import BackgroundScheduler
INTERVAL = 1 * 60 * 60  # 时间间隔,单位:秒
total = 0
def print_job():
    global total

total += 1
print("print_job start.total = {} times".format(total))

if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    scheduler.add_job(print_job, 'interval', seconds=INTERVAL)
    scheduler.start()
    while True:
        time.sleep(1024)