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python中的apscheduler模塊

觸發 sta min block blog trigger 定時任務 ble sun

1.簡介

apscheduler是python中的任務定時模塊,它包含四個組件:觸發器(trigger),作業存儲(job store),執行器(executor),調度器(scheduler).

2.安裝

pip install apscheduler

3.示例

 1 # coding=utf-8
 2 from apscheduler.schedulers.blocking import BlockingScheduler
 3 
 4 #作業1
 5 def my_job1():
 6     print hello world!
 7 
 8 #作業2
 9 def my_job2(name):
10 print hello world,, name 11 12 # 每個五秒運行一次函數 13 sched = BlockingScheduler() 14 #不帶參數和和帶有參數的函數 15 sched.add_job(my_job1, interval, seconds=5) 16 sched.add_job(func=my_job2, args=(tom,), trigger=interval, seconds=5) 17 sched.start()

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4.講解

關於觸發器(trigger),它有三種參數可選:date / interval / cron.

date:一次性任務,即只執行一次任務。

參數如下:

next_run_time (datetime|str) – the date/time to run the job at

timezone (datetime.tzinfo|str) – time zone for run_date if it doesn’t have one already

示例如下:

# 延時五秒後執行一次
sched.add_job(func=my_job2, args=(tom,), trigger=date, next_run_time=now+datetime.timedelta(seconds=5))

interval:循環任務,即按照時間間隔執行任務。

參數如下:

weeks (int) – number of weeks to wait
days (int) – number of days to wait
hours (int) – number of hours to wait
minutes (int) – number of minutes to wait
seconds (int) – number of seconds to wait
start_date (datetime|str) – starting point for the interval calculation
end_date (datetime|str) – latest possible date/time to trigger on
timezone (datetime.tzinfo|str) – time zone to use for the date/time calculations

示例如下:

#每隔五秒執行一次任務
sched.add_job(func=my_job2, args=(tom,), trigger=interval, seconds=5)

cron:定時任務,即在每個時間段執行任務。

參數如下:

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)

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示例如下:

#在1-3,8-10月,每天的下午5點,每一分鐘執行一次任務
sched.add_job(func=my_job1, trigger=cron, month=1-3,8-10, day=*, hour=17, minute=*)

python中的apscheduler模塊