我有一个Python 3脚本,它从URL获取一些JSON并对其进行处理,并在我得到的数据有任何重大更改时通知我。我试过使用notify2和PyGObject的libnotify绑定(gi.repository.Notify),并用任一方法得到类似的结果。这个脚本在终端运行时运行正常,但当cron试图运行它时会产生窒息。现在使用libnotify的Python 3脚本作为cron作业失败
import notify2
from gi.repository import Notify
def notify_pygobject(new_stuff):
Notify.init('My App')
notify_str = '\n'.join(new_stuff)
print(notify_str)
popup = Notify.Notification.new('Hey! Listen!', notify_str,
'dialog-information')
popup.show()
def notify_notify2(new_stuff):
notify2.init('My App')
notify_str = '\n'.join(new_stuff)
print(notify_str)
popup = notify2.Notification('Hey! Listen!', notify_str,
'dialog-information')
popup.show()
,如果我创建与字符串列表调用notify_pygobject
一个脚本,cron的我通过邮件假脱机引发此错误回:
Traceback (most recent call last):
File "/home/p0lar_bear/Documents/devel/notify-test/test1.py", line 3, in <module>
main()
File "/home/p0lar_bear/Documents/devel/notify-test/test1.py", line 4, in main
testlib.notify(notify_projects)
File "/home/p0lar_bear/Documents/devel/notify-test/testlib.py", line 8, in notify
popup.show()
File "/usr/lib/python3/dist-packages/gi/types.py", line 113, in function
return info.invoke(*args, **kwargs)
gi._glib.GError: Error spawning command line `dbus-launch --autolaunch=776643a88e264621544719c3519b8310 --binary-syntax --close-stderr': Child process exited with code 1
...如果我改变它调用notify_notify2()
代替:
Traceback (most recent call last):
File "/home/p0lar_bear/Documents/devel/notify-test/test2.py", line 3, in <module>
main()
File "/home/p0lar_bear/Documents/devel/notify-test/test2.py", line 4, in main
testlib.notify(notify_projects)
File "/home/p0lar_bear/Documents/devel/notify-test/testlib.py", line 13, in notify
notify2.init('My App')
File "/usr/lib/python3/dist-packages/notify2.py", line 93, in init
bus = dbus.SessionBus(mainloop=mainloop)
File "/usr/lib/python3/dist-packages/dbus/_dbus.py", line 211, in __new__
mainloop=mainloop)
File "/usr/lib/python3/dist-packages/dbus/_dbus.py", line 100, in __new__
bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 122, in __new__
bus = cls._new_for_bus(address_or_type, mainloop=mainloop)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
我做了一些研究,看到建议把PATH=
到我的crontab,或出口$DISPLAY
(我这样做是在脚本中调用os.system('export DISPLAY=:0')
),但没有造成任何变化......
将导出添加到cron作业本身修复了它!谢谢! 另外我想我会抛出,我通常在可执行的Python 3.x脚本中使用这个shebang:'#!/ usr/bin/env python3' –