django定时任务python调度框架APScheduler使用详解

 # coding=utf-8
 2 """
 3 Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
 4 intervals.
 5 """
 6
 7 from datetime import datetime
 8 import time
 9 import os
10
11 from apscheduler.schedulers.background import BackgroundScheduler
12
13
14 def tick():
15     print('Tick! The time is: %s' % datetime.now())
16
17
18 if __name__ == '__main__':
19     scheduler = BackgroundScheduler()
20     scheduler.add_job(tick, 'interval', seconds=3)　　#间隔3秒钟执行一次
21     scheduler.start()    #这里的调度任务是独立的一个线程
22     print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))
23
24     try:
25         # This is here to simulate application activity (which keeps the main thread alive).
26         while True:
27             time.sleep(2)    #其他任务是独立的线程执行
28             print('sleep!')
29     except (KeyboardInterrupt, SystemExit):
30         # Not strictly necessary if daemonic mode is enabled but should be done if possible
31         scheduler.shutdown()
32         print('Exit The Job!')

非阻塞调度，在指定的时间执行一次

 1 # coding=utf-8
 2 """
 3 Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
 4 intervals.
 5 """
 6
 7 from datetime import datetime
 8 import time
 9 import os
10
11 from apscheduler.schedulers.background import BackgroundScheduler
12
13
14 def tick():
15     print('Tick! The time is: %s' % datetime.now())
16
17
18 if __name__ == '__main__':
19     scheduler = BackgroundScheduler()
20     #scheduler.add_job(tick, 'interval', seconds=3)
21     scheduler.add_job(tick, 'date', run_date='2016-02-14 15:01:05')　　#在指定的时间，只执行一次
22     scheduler.start()    #这里的调度任务是独立的一个线程
23     print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))
24
25     try:
26         # This is here to simulate application activity (which keeps the main thread alive).
27         while True:
28             time.sleep(2)    #其他任务是独立的线程执行
29             print('sleep!')
30     except (KeyboardInterrupt, SystemExit):
31         # Not strictly necessary if daemonic mode is enabled but should be done if possible
32         scheduler.shutdown()
33         print('Exit The Job!')

非阻塞的方式，采用cron的方式执行

 1 # coding=utf-8
 2 """
 3 Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
 4 intervals.
 5 """
 6
 7 from datetime import datetime
 8 import time
 9 import os
10
11 from apscheduler.schedulers.background import BackgroundScheduler
12
13
14 def tick():
15     print('Tick! The time is: %s' % datetime.now())
16
17
18 if __name__ == '__main__':
19     scheduler = BackgroundScheduler()
20     #scheduler.add_job(tick, 'interval', seconds=3)
21     #scheduler.add_job(tick, 'date', run_date='2016-02-14 15:01:05')
22     scheduler.add_job(tick, 'cron', day_of_week='6', second='*/5')
23     '''
24         year (int|str) – 4-digit year
25         month (int|str) – month (1-12)
26         day (int|str) – day of the (1-31)
27         week (int|str) – ISO week (1-53)
28         day_of_week (int|str) – number or name of weekday (0-6 or mon,tue,wed,thu,fri,sat,sun)
29         hour (int|str) – hour (0-23)
30         minute (int|str) – minute (0-59)
31         second (int|str) – second (0-59)
32
33         start_date (datetime|str) – earliest possible date/time to trigger on (inclusive)
34         end_date (datetime|str) – latest possible date/time to trigger on (inclusive)
35         timezone (datetime.tzinfo|str) – time zone to use for the date/time calculations (defaults to scheduler timezone)
36
37         *    any    Fire on every value
38         */a    any    Fire every a values, starting from the minimum
39         a-b    any    Fire on any value within the a-b range (a must be smaller than b)
40         a-b/c    any    Fire every c values within the a-b range
41         xth y    day    Fire on the x -th occurrence of weekday y within the month
42         last x    day    Fire on the last occurrence of weekday x within the month
43         last    day    Fire on the last day within the month
44         x,y,z    any    Fire on any matching expression; can combine any number of any of the above expressions
45     '''
46     scheduler.start()    #这里的调度任务是独立的一个线程
47     print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))
48
49     try:
50         # This is here to simulate application activity (which keeps the main thread alive).
51         while True:
52             time.sleep(2)    #其他任务是独立的线程执行
53             print('sleep!')
54     except (KeyboardInterrupt, SystemExit):
55         # Not strictly necessary if daemonic mode is enabled but should be done if possible
56         scheduler.shutdown()
57         print('Exit The Job!')

阻塞的方式，间隔3秒执行一次

 1 # coding=utf-8
 2 """
 3 Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
 4 intervals.
 5 """
 6
 7 from datetime import datetime
 8 import os
 9
10 from apscheduler.schedulers.blocking import BlockingScheduler
11
12
13 def tick():
14     print('Tick! The time is: %s' % datetime.now())
15
16
17 if __name__ == '__main__':
18     scheduler = BlockingScheduler()
19     scheduler.add_job(tick, 'interval', seconds=3)
20
21     print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))
22
23     try:
24         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
25     except (KeyboardInterrupt, SystemExit):
26         # Not strictly necessary if daemonic mode is enabled but should be done if possible
27         scheduler.shutdown()
28         print('Exit The Job!')

采用阻塞的方法，只执行一次

 1 # coding=utf-8
 2 """
 3 Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
 4 intervals.
 5 """
 6
 7 from datetime import datetime
 8 import os
 9
10 from apscheduler.schedulers.blocking import BlockingScheduler
11
12
13 def tick():
14     print('Tick! The time is: %s' % datetime.now())
15
16
17 if __name__ == '__main__':
18     scheduler = BlockingScheduler()
19     scheduler.add_job(tick, 'date', run_date='2016-02-14 15:23:05')
20
21     print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))
22
23     try:
24         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
25     except (KeyboardInterrupt, SystemExit):
26         # Not strictly necessary if daemonic mode is enabled but should be done if possible
27         scheduler.shutdown()
28         print('Exit The Job!')

采用阻塞的方式，使用cron的调度方法

 1 # coding=utf-8
 2 """
 3 Demonstrates how to use the background scheduler to schedule a job that executes on 3 second
 4 intervals.
 5 """
 6
 7 from datetime import datetime
 8 import os
 9
10 from apscheduler.schedulers.blocking import BlockingScheduler
11
12
13 def tick():
14     print('Tick! The time is: %s' % datetime.now())
15
16
17 if __name__ == '__main__':
18     scheduler = BlockingScheduler()
19     scheduler.add_job(tick, 'cron', day_of_week='6', second='*/5')
20     '''
21         year (int|str) – 4-digit year
22         month (int|str) – month (1-12)
23         day (int|str) – day of the (1-31)
24         week (int|str) – ISO week (1-53)
25         day_of_week (int|str) – number or name of weekday (0-6 or mon,tue,wed,thu,fri,sat,sun)
26         hour (int|str) – hour (0-23)
27         minute (int|str) – minute (0-59)
28         second (int|str) – second (0-59)
29
30         start_date (datetime|str) – earliest possible date/time to trigger on (inclusive)
31         end_date (datetime|str) – latest possible date/time to trigger on (inclusive)
32         timezone (datetime.tzinfo|str) – time zone to use for the date/time calculations (defaults to scheduler timezone)
33
34         *    any    Fire on every value
35         */a    any    Fire every a values, starting from the minimum
36         a-b    any    Fire on any value within the a-b range (a must be smaller than b)
37         a-b/c    any    Fire every c values within the a-b range
38         xth y    day    Fire on the x -th occurrence of weekday y within the month
39         last x    day    Fire on the last occurrence of weekday x within the month
40         last    day    Fire on the last day within the month
41         x,y,z    any    Fire on any matching expression; can combine any number of any of the above expressions
42     '''
43
44     print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))
45
46     try:
47         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
48     except (KeyboardInterrupt, SystemExit):
49         # Not strictly necessary if daemonic mode is enabled but should be done if possible
50         scheduler.shutdown()
51         print('Exit The Job!')