我无法使用 python-daemon 1.6与APScheduler相处以管理任务列表。
(调度程序需要在特定的选定时间 - 秒分辨率下定期运行它们)
工作(直到按Ctrl + C),
from apscheduler.scheduler import Scheduler
import logging
import signal
def job_function():
print "Hello World"
def init_schedule():
logging.basicConfig(level=logging.DEBUG)
sched = Scheduler()
# Start the scheduler
sched.start()
return sched
def schedule_job(sched, function, periodicity, start_time):
sched.add_interval_job(job_function, seconds=periodicity, start_date=start_time)
if __name__ == "__main__":
sched = init_schedule()
schedule_job(sched, job_function, 120, '2011-10-06 12:30:09')
schedule_job(sched, job_function, 120, '2011-10-06 12:31:03')
# APSScheduler.Scheduler only works until the main thread exits
signal.pause()
# Or
#time.sleep(300)
示例输出:
INFO:apscheduler.threadpool:启动了具有0个核心线程和20个最大线程的线程池 信息:apscheduler.scheduler:调度程序已启动 DEBUG:apscheduler.scheduler:寻找要运行的工作 调查:apscheduler.scheduler:没有工作;等到添加工作 INFO:apscheduler.scheduler:添加作业“job_function(触发:间隔[0:00:30],下次运行:2011-10-06 18:30:39)”到作业商店“默认” INFO:apscheduler.scheduler:添加作业“job_function(触发:间隔[0:00:30],下次运行:2011-10-06 18:30:33”)到作业商店“默认” DEBUG:apscheduler.scheduler:寻找要运行的工作 调试:apscheduler.scheduler:下次唤醒将于2011-10-06 18:30:33(在10.441128秒内)到期
使用python-daemon, 输出为空白。为什么DaemonContext没有正确生成进程?
编辑 - 工作
在阅读python-daemon源代码后,我已将stdout和stderr添加到DaemonContext中,最后能够知道发生了什么。
def job_function():
print "Hello World"
print >> test_log, "Hello World"
def init_schedule():
logging.basicConfig(level=logging.DEBUG)
sched = Scheduler()
sched.start()
return sched
def schedule_job(sched, function, periodicity, start_time):
sched.add_interval_job(job_function, seconds=periodicity, start_date=start_time)
if __name__ == "__main__":
test_log = open('daemon.log', 'w')
daemon.DaemonContext.files_preserve = [test_log]
try:
with daemon.DaemonContext():
from datetime import datetime
from apscheduler.scheduler import Scheduler
import signal
logging.basicConfig(level=logging.DEBUG)
sched = init_schedule()
schedule_job(sched, job_function, 120, '2011-10-06 12:30:09')
schedule_job(sched, job_function, 120, '2011-10-06 12:31:03')
signal.pause()
except Exception, e:
print e
答案 0 :(得分:1)
我对python-daemon知之甚少,但test_log
中的job_function()
未定义。您引用init_schedule()
的{{1}}也会出现同样的问题。