python调度框架APScheduler使用详解

小鱼儿 2021-11-23 02:50 429阅读 0赞

非阻塞调度，在指定的时间执行一次

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

非阻塞的方式，采用cron的方式执行

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

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!')

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

阻塞的方式，间隔3秒执行一次

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

采用阻塞的方法，只执行一次

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

采用阻塞的方式，使用cron的调度方法

![复制代码][aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]

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!')

[aHR0cHM6Ly9jb21tb24uY25ibG9ncy5jb20vaW1hZ2VzL2NvcHljb2RlLmdpZg]: /images/20211122/e8947497992b40518b4604ed6676b539.png