[Twisted-Python] Discovering Twisted : reactor.stop()

27 Sep 2007

      Hello,

I discovered Python recently and even more recently the Twisted module.

I have a problem with the Twisted reactor and I would like to understand for
which reason my program freezes.

Here the code which should loop forever :

from twisted.internet import reactor
from twisted.internet import task

class reactorProb(object):
    def __init__(self):
        self.count = 5
        self._callback = task.LoopingCall(self.Heartbeat)
        self._callback.start(1, now = False)
    def Heartbeat(self):
        print "Top"
        self.count -= 1
        if (self.count == 0):
            print "Exit"
            self._callback.stop()
            del self._callback
            reactor.stop()

while (True):
    rp = reactorProb()
    print "Enter into reactor.run()"
    reactor.run()
    print "Leave from reactor.run()"

I got this:

Enter into reactor.run()
Top
Top
Top
Top
Top
Exit
Leave from reactor.run()
Enter into reactor.run()
Top
Top
Top
Top
Top
Exit

Thus I start first once the reactor, I stop it then I start again and it
freezes instead of stopping it the reactor.

Could somebody explain me it why?

Thank you in advance.

smu

[Twisted-Python] Discovering Twisted : reactor.stop()

Steve MULLER