Simple message queue based Jabber bot

jnot.py

#!/usr/bin/env python
import yaml
from jabberbot import JabberBot
from beanstalkc import Connection as BSC

def connect_beanstalk(host = "127.0.0.1", port = "11300", tube = None):
    try:
        c = BSC()
    except:
        return None
    else:
        if tube is not None:
            c.use(tube)
            c.ignore("default")
            c.watch(tube)
        return c
        

class YayBot(JabberBot):
    displayed_jobs = []
    bsc = connect_beanstalk(tube = "jabber")
    def idle_proc(self):
        if self.bsc is None:
            self.bsc = connect_beanstalk()
            if self.bsc is not None:
                self.log("Connected successfully to beanstalkd")
            else:
                return
        
        try:
            job = self.bsc.reserve(timeout=0)
        except:
            import traceback
            self.log("Error talking to beanstalkd: %s" % (traceback.format_exc()))
            self.bsc = connect_beanstalk()
        else:
            if job is not None:
                self.displayed_jobs.append(job)
                self.log("Got a job from the tube")
                self.log("Job: %s" % (job.body))
                msg_info = yaml.load(job.body)
                self.send(msg_info['target'], msg_info['msg'])

    def bot_ok(self, mess, args):
        """Acnowledges sent messages (removes them from queue)"""
        for job in self.displayed_jobs:
            self.log("Deleting job %s" % (job.jid))
            try:
                job.delete()
            except:
                import traceback
                self.log("Error deleting job:\n%s" % (traceback.format_exc()))

    def bot_quit(self, mess, args):
        """Disconnect (run twice to quit, or run "quit now")"""
        if args == "now":
            self.quit()
            return "Bye"
        else:
            return """Run "quit now" to disconnect the bot from jabber"""

def main():
    "Connect to the server and run the bot forever"
    jabber_bot = YayBot("jabberusername", "jabberpassword")
    jabber_bot.serve_forever()

if __name__ == '__main__':    
    main()