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!')

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