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如何使用python调度框架ALScheduler?

2017-07-02 12:22:50 来源:www.45fan.com 【

如何使用python调度框架ALScheduler?

最近在研究python调度框架APScheduler使用的路上,那么今天也算个学习笔记吧!

# 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
   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!')

非阻塞调度,在指定的时间执行一次

# 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!')

非阻塞的方式,采用cron的方式执行

# 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')
 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
 '''
 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!')

阻塞的方式,间隔3秒执行一次

# 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, 'interval', seconds=3)
 
 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!')

采用阻塞的方法,只执行一次

# 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, 'date', run_date='2016-02-14 15:23:05')
 
 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!')

采用阻塞的方式,使用cron的调度方法

# 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!')

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持路饭。


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Tags: 详解 python 调度
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