In openerp to handle a long-polling request, we need to bypass private attribute access because we do not know before starting that the thread and handles a long-polling request and rename the thread to avoid tests waiting for a long-polling.
Example
Use this code in your own module in .py file,

def create_poll(self, dbname, channels, last, timeout=TIMEOUT):
        # Dont hang ctrl-c for a poll request, we need to bypass private
        # attribute access because we dont know before starting the thread that
        # it will handle a longpolling request
        if not openerp.evented:
            current = threading.current_thread()
            current._Thread__daemonic = True
            # rename the thread to avoid tests waiting for a longpolling
            current.setName("openerp.longpolling.request.%s" % current.ident)

        registry = openerp.registry(dbname)

        # immediatly returns if past notifications exist
        with registry.cursor() as cr:
            notifications = registry['bus.bus'].poll(cr, openerp.SUPERUSER_ID, channels, last)
        # or wait for future ones
        if not notifications:
            event = self.Event()
            for channel in channels:
                self.channels.setdefault(hashable(channel), []).append(event)
            try:
                event.wait(timeout=timeout)
                with registry.cursor() as cr:
                    notifications = registry['bus.bus'].poll(cr, openerp.SUPERUSER_ID, channels, last)
            except Exception:
                # timeout
                pass
        return notifications