„apscheduler-Modul installieren“
Einmalige verzögerte Aufgabenausführung (führen Sie den Job einmal zu einem bestimmten Datum/zur angegebenen Uhrzeit aus)
2.timezone
(datetime.tzinfo|str) – Geben Sie die Zeitzone anjob Speicher
CPU-intensive Vorgänge
umfasst, können Sie ProcessPoolExecutor verwenden, um mehr CPU-Kerne zu verwenden. Sie können auch beide gleichzeitig verwenden, indem Sie ProcessPoolExecutor als zweiten Executor verwenden.BlockingScheduler: Wenn der Planer das einzige ist, was in Ihrer App ausgeführt wird app Wird während der Ausführung verwendet.
AsyncIOScheduler: Wird verwendet, wenn Ihr Programm Asyncio (ein asynchrones Framework) verwendet.GeventScheduler: Wird verwendet, wenn Ihr Programm gevent (ein leistungsstarkes Python-Parallelitäts-Framework) verwendet.
TornadoScheduler: Wird verwendet, wenn Ihr Programm auf Tornado (einem Web-Framework) basiert.
TwistedScheduler: Verwenden Sie, wenn Ihr Programm Twisted (ein asynchrones Framework) verwendet.
pip install apscheduler
# -*- coding:utf-8 -*- from apscheduler.schedulers.blocking import BlockingScheduler import datetime def my_job1(): print('my_job1 is running, Now is %s' % datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")) def my_job2(): print('my_job2 is running, Now is %s' % datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")) sched = BlockingScheduler() # 每隔5秒运行一次my_job1 sched.add_job(my_job1, 'interval', seconds=5, id='my_job1') # 每隔5秒运行一次my_job2 sched.add_job(my_job2, 'cron', second='*/5', id='my_job2') sched.start()
Entfernungsjob
# -*- coding:utf-8 -*- from apscheduler.schedulers.blocking import BlockingScheduler import datetime sched = BlockingScheduler() # 每隔5秒运行一次my_job1 @sched.scheduled_job('interval', seconds=5, id='my_job1') def my_job1(): print('my_job1 is running, Now is %s' % datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")) # 每隔5秒运行一次my_job2 @sched.scheduled_job('cron', second='*/5', id='my_job2') def my_job2(): print('my_job2 is running, Now is %s' % datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")) sched.start()
使用remove() 移除作业
# -*- coding:utf-8 -*- from apscheduler.schedulers.blocking import BlockingScheduler import datetime def my_job(text=""): print(text, 'my_job1 is running, Now is %s' % datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")) sched = BlockingScheduler() job = sched.add_job(my_job, 'interval', seconds=2, args=['第一个作业']) job.remove() # #如果有多个任务序列的话可以给每个任务设置ID号,可以根据ID号选择清除对象,且remove放到start前才有效 sched.add_job(my_job, 'interval', seconds=2, id='my_job_id', args=['第二个作业']) sched.start()
代码执行结果:
使用remove_job()移除作业
# -*- coding:utf-8 -*- from apscheduler.schedulers.blocking import BlockingScheduler import datetime def my_job(text=""): print(text, 'my_job1 is running, Now is %s' % datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")) sched = BlockingScheduler() job = sched.add_job(my_job, 'interval', seconds=2, args=['第一个作业']) # #如果有多个任务序列的话可以给每个任务设置ID号,可以根据ID号选择清除对象,且remove放到start前才有效 sched.add_job(my_job, 'interval', seconds=2, id='my_job_id', args=['第二个作业']) sched.remove_job('my_job_id') sched.start()
代码执行结果:
APScheduler有3中内置的触发器类型:
新建一个调度器(scheduler);
添加一个调度任务(job store);
运行调度任务。
代码实现
# -*- coding:utf-8 -*- import time import datetime from apscheduler.schedulers.blocking import BlockingScheduler def my_job(text="默认值"): print(text, time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))) sched = BlockingScheduler() sched.add_job(my_job, 'interval', seconds=3, args=['3秒定时']) # 2018-3-17 00:00:00 执行一次,args传递一个text参数 sched.add_job(my_job, 'date', run_date=datetime.date(2019, 10, 17), args=['根据年月日定时执行']) # 2018-3-17 13:46:00 执行一次,args传递一个text参数 sched.add_job(my_job, 'date', run_date=datetime.datetime(2019, 10, 17, 14, 10, 0), args=['根据年月日时分秒定时执行']) # sched.start() """ interval 间隔调度,参数如下: weeks (int) – 间隔几周 days (int) – 间隔几天 hours (int) – 间隔几小时 minutes (int) – 间隔几分钟 seconds (int) – 间隔多少秒 start_date (datetime|str) – 开始日期 end_date (datetime|str) – 结束日期 timezone (datetime.tzinfo|str) – 时区 """ """ cron参数如下: year (int|str) – 年,4位数字 month (int|str) – 月 (范围1-12) day (int|str) – 日 (范围1-31) week (int|str) – 周 (范围1-53) day_of_week (int|str) – 周内第几天或者星期几 (范围0-6 或者 mon,tue,wed,thu,fri,sat,sun) hour (int|str) – 时 (范围0-23) minute (int|str) – 分 (范围0-59) second (int|str) – 秒 (范围0-59) start_date (datetime|str) – 最早开始日期(包含) end_date (datetime|str) – 最晚结束时间(包含) timezone (datetime.tzinfo|str) – 指定时区 """ # my_job将会在6,7,8,11,12月的第3个周五的1,2,3点运行 sched.add_job(my_job, 'cron', month='6-8,11-12', day='3rd fri', hour='0-3') # 截止到2018-12-30 00:00:00,每周一到周五早上五点半运行job_function sched.add_job(my_job, 'cron', day_of_week='mon-fri', hour=5, minute=30, end_date='2018-12-31') # 表示2017年3月22日17时19分07秒执行该程序 sched.add_job(my_job, 'cron', year=2017, month=3, day=22, hour=17, minute=19, second=7) # 表示任务在6,7,8,11,12月份的第三个星期五的00:00,01:00,02:00,03:00 执行该程序 sched.add_job(my_job, 'cron', month='6-8,11-12', day='3rd fri', hour='0-3') # 表示从星期一到星期五5:30(AM)直到2014-05-30 00:00:00 sched.add_job(my_job, 'cron', day_of_week='mon-fri', hour=5, minute=30, end_date='2014-05-30') # 表示每5秒执行该程序一次,相当于interval 间隔调度中seconds = 5 sched.add_job(my_job, 'cron', second='*/5', args=['5秒定时']) sched.start()
cron表达式 | 参数 | 描述 |
---|---|---|
* | 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 |
使用SQLAlchemy作业存储器存放作业
# -*- coding:utf-8 -*- from apscheduler.schedulers.blocking import BlockingScheduler from datetime import datetime import logging sched = BlockingScheduler() def my_job(): print('my_job is running, Now is %s' % datetime.now().strftime("%Y-%m-%d %H:%M:%S")) # 使用sqlalchemy作业存储器 # 根据自己电脑安装的库选择用什么连接 ,如pymysql 其中:scrapy表示数据库的名称,操作数据库之前应创建对应的数据库 url = 'mysql+pymysql://root:123456@localhost:3306/scrapy?charset=utf8' sched.add_jobstore('sqlalchemy', url=url) # 添加作业 sched.add_job(my_job, 'interval', id='myjob', seconds=5) log = logging.getLogger('apscheduler.executors.default') log.setLevel(logging.INFO) # DEBUG # 设定日志格式 fmt = logging.Formatter('%(levelname)s:%(name)s:%(message)s') h = logging.StreamHandler() h.setFormatter(fmt) log.addHandler(h) sched.start()
暂停和恢复作业
# 暂停作业: apsched.job.Job.pause() apsched.schedulers.base.BaseScheduler.pause_job() # 恢复作业: apsched.job.Job.resume() apsched.schedulers.base.BaseScheduler.resume_job()
获得job列表
get_jobs(),它会返回所有的job实例;
使用print_jobs()来输出所有格式化的作业列表;
get_job(job_id=“任务ID”)获取指定任务的作业列表。
代码实现:
# -*- coding:utf-8 -*- from apscheduler.schedulers.blocking import BlockingScheduler import datetime def my_job(text=""): print(text, 'my_job1 is running, Now is %s' % datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")) sched = BlockingScheduler() job = sched.add_job(my_job, 'interval', seconds=2, args=['第一个作业']) sched.add_job(my_job, 'interval', seconds=2, id='my_job_id', args=['第二个作业']) print(sched.get_jobs()) print(sched.get_job(job_id="my_job_id")) sched.print_jobs() sched.start()
关闭调度器
默认情况下调度器会等待所有正在运行的作业完成后,关闭所有的调度器和作业存储。如果你不想等待,可以将wait选项设置为False。
sched.shutdown() sched.shutdown(wait=False)
Das obige ist der detaillierte Inhalt vonWie installiere und verwende ich das Drittanbietermodul Apscheduler in Python?. Für weitere Informationen folgen Sie bitte anderen verwandten Artikeln auf der PHP chinesischen Website!