详解python调度框架APScheduler使用

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!')

来源：http://www.cnblogs.com/hushaojun/p/5189109.html