The Alarm Extension provides the AlarmManager extended object, with easy mechanisms for handling long running operations that might timeout after a set amount of time.
No external dependencies
This extension does not rely on any application level configuration settings or meta options.
import timefrom cement import App, CaughtSignalclass MyApp(App):class Meta:label = 'myapp'exit_on_close = Trueextensions = ['alarm']with MyApp() as app:try:app.run()app.alarm.set(3, "The operation timed out after 3 seconds!")# do something that takes time to operatetime.sleep(5)app.alarm.stop()except CaughtSignal as e:print(e.msg)app.exit_code = 1
$ python myapp.pyERROR: The operation timed out after 3 seconds!Caught signal 14