# 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!')