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집  >  기사  >  백엔드 개발  >  Python에서 스케줄링을 위해 프레임워크 APScheduler를 사용하는 예에 대한 자세한 설명

Python에서 스케줄링을 위해 프레임워크 APScheduler를 사용하는 예에 대한 자세한 설명

Y2J
Y2J원래의
2017-04-22 09:44:572186검색

이 글은 Python 스케줄링 프레임워크 APScheduler의 사용에 대한 자세한 설명을 주로 소개합니다. 편집자는 이것이 꽤 좋다고 생각합니다. 이제 여러분과 공유하고 참고용으로 제공하겠습니다. 에디터 따라가서 살펴볼까요

최근 파이썬 스케줄링 프레임워크인 APScheduler 활용에 대해 공부하고 있어서 오늘은 스터디노트로 활용해도 좋을 것 같아요! 

# 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!')

지정된 시간에 한 번 실행되는 비차단 스케줄링 

# 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!')

cron을 사용하여 실행되는 논차단 방식 

# 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!')

3초에 한 번씩 실행되는 차단 방식 

# 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!')

차단 방식을 채택하고 한 번만 실행

# 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!')

차단 방식을 채택하고 크론 스케줄링 방식을 사용

# 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!')

위 내용은 Python에서 스케줄링을 위해 프레임워크 APScheduler를 사용하는 예에 대한 자세한 설명의 상세 내용입니다. 자세한 내용은 PHP 중국어 웹사이트의 기타 관련 기사를 참조하세요!

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