python使用schedule定时任务

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python中的轻量级定时任务调度库：schedule

定时任务可以使用celery或crontab等，Python中有一个轻量级的定时任务调度的库：schedule。

安装

pip install schedule

简单例子

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import schedule
import time
 
def job():
    print("I'm working...")
 
schedule.every(10).minutes.do(job)
schedule.every().hour.do(job)
schedule.every().day.at("10:30").do(job)
schedule.every(5).to(10).days.do(job)
schedule.every().monday.do(job)
schedule.every().wednesday.at("13:15").do(job)
 
while True:
    schedule.run_pending()
    time.sleep(1)

多任务运行

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import datetime
import schedule
import time
 
def job1():
    print("I'm working for job1")
    time.sleep(2)
    print("job1:", datetime.datetime.now())
 
def job2():
    print("I'm working for job2")
    time.sleep(2)
    print("job2:", datetime.datetime.now())
 
def run():
    schedule.every(10).seconds.do(job1)
    schedule.every(10).seconds.do(job2)
 
    while True:
        schedule.run_pending()
        time.sleep(1)

        
if __name__ == '__main__':
    run()

由于上面这种方法会导致job2运行延迟，所以这时候需要使用多线程运行。

多线程运行

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import datetime
import schedule
import threading
import time
 
def job1():
    print("I'm working for job1")
    time.sleep(2)
    print("job1:", datetime.datetime.now())
 
def job2():
    print("I'm working for job2")
    time.sleep(2)
    print("job2:", datetime.datetime.now())
 
def job1_task():
    threading.Thread(target=job1).start()
 
def job2_task():
    threading.Thread(target=job2).start()
 
def run():
    schedule.every(10).seconds.do(job1_task)
    schedule.every(10).seconds.do(job2_task)
 
    while True:
        schedule.run_pending()
        time.sleep(1)
        
        
if __name__ == '__main__':
    run()