我们想再x秒后执行一个任务,可以使用twisted.internet.interfaces.IReactorTime:
- from twisted.internet import reactor
- def f(s):
- print "this will run 3.5 seconds after it was scheduled: %s" % s
- reactor.callLater(3.5, f, "hello, world")
如果想每x秒就重复执行一个任务,可以使用twisted.internet.task.LoopingCall:
- from twisted.internet import task
- def runEverySecond():
- print "a second has passed"
- l = task.LoopingCall(runEverySecond)
- l.start(1.0) # call every second
- # l.stop() will stop the looping calls
如果想要取消一个已经安排的任务:
- from twisted.internet import reactor
- def f():
- print "I'll never run."
- callID = reactor.callLater(5, f)
- callID.cancel()
翻译 -- Jerry Marx.
