def __init__(self, parent, reactor, watcher, socketType): QObject.__init__(self, parent) self.reactor = reactor self.watcher = watcher fd = watcher.fileno() self.notifier = QSocketNotifier(fd, socketType, parent) self.notifier.setEnabled(True) if socketType == QSocketNotifier.Read: self.fn = self.read else: self.fn = self.write self.notifier.activated.connect(self.fn)