定时任务APScheduler使用详解

目录

• cron定时任务
• 常用调度设置
• interval间隔执行
• date指定时间执行

cron定时任务

# coding=utf-8
"""
Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
intervals.
"""

from datetime import datetime
import os

from apscheduler.schedulers.blocking import BlockingScheduler


def tick():
    print('Tick! The time is: %s' % datetime.now())


if __name__ == '__main__':
    scheduler = BlockingScheduler()
    scheduler.add_job(tick, 'cron', day_of_week='6', second='*/5')
    '''
        year (int|str) – 4-digit year
        month (int|str) – month (1-12)
        day (int|str) – day of the (1-31)
        week (int|str) – ISO week (1-53)
        day_of_week (int|str) – number or name of weekday (0-6 or mon,tue,wed,thu,fri,sat,sun)
        hour (int|str) – hour (0-23)
        minute (int|str) – minute (0-59)
        second (int|str) – second (0-59)

        start_date (datetime|str) – earliest possible date/time to trigger on (inclusive)
        end_date (datetime|str) – latest possible date/time to trigger on (inclusive)
        timezone (datetime.tzinfo|str) – time zone to use for the date/time calculations (defaults to scheduler timezone)

        *    any    Fire on every value
        */a    any    Fire every a values, starting from the minimum
        a-b    any    Fire on any value within the a-b range (a must be smaller than b)
        a-b/c    any    Fire every c values within the a-b range
        xth y    day    Fire on the x -th occurrence of weekday y within the month
        last x    day    Fire on the last occurrence of weekday x within the month
        last    day    Fire on the last day within the month
        x,y,z    any    Fire on any matching expression; can combine any number of any of the above expressions
    '''

    print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))

    try:
        scheduler.start()    #采用的是阻塞的方式，只有一个线程专职做调度的任务
    except (KeyboardInterrupt, SystemExit):
        # Not strictly necessary if daemonic mode is enabled but should be done if possible
        scheduler.shutdown()
        print('Exit The Job!')

常用调度设置

每天9点50执行 sched.add_job(任务函数, 'cron', hour=9, minute=50)
每周一到五9点50执行 sched.add_job(self.job, 'cron', day_of_week='1-5', hour=9, minute=50)

interval间隔执行

# coding=utf-8
"""
Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
intervals.
"""

from datetime import datetime
import time
import os

from apscheduler.schedulers.background import BackgroundScheduler


def tick():
    print('Tick! The time is: %s' % datetime.now())


if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    scheduler.add_job(tick, 'interval', seconds=3)　　#间隔3秒钟执行一次
    scheduler.start()    #这里的调度任务是独立的一个线程
    print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))

    try:
        # This is here to simulate application activity (which keeps the main thread alive).
        while True:
            time.sleep(2)    #其他任务是独立的线程执行
            #scheduler.start()    #如果使用阻塞方式调度，就把scheduler.start()放在这里
            print('sleep!')

    except (KeyboardInterrupt, SystemExit):
        # Not strictly necessary if daemonic mode is enabled but should be done if possible
        scheduler.shutdown()
        print('Exit The Job!')

date指定时间执行

# coding=utf-8
"""
Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
intervals.
"""

from datetime import datetime
import time
import os

from apscheduler.schedulers.background import BackgroundScheduler


def tick():
    print('Tick! The time is: %s' % datetime.now())


if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    #scheduler.add_job(tick, 'interval', seconds=3)
    scheduler.add_job(tick, 'date', run_date='2016-02-14 15:01:05')　　#在指定的时间，只执行一次
    scheduler.start()    #这里的调度任务是独立的一个线程
    print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))

    try:
        # This is here to simulate application activity (which keeps the main thread alive).
        while True:
            time.sleep(2)    #其他任务是独立的线程执行
            print('sleep!')
    except (KeyboardInterrupt, SystemExit):
        # Not strictly necessary if daemonic mode is enabled but should be done if possible
        scheduler.shutdown()
        print('Exit The Job!')

参考文档