def addReader(self, reader):
        """Add a FileDescriptor for notification of data available to read.
        """
        fd = reader.fileno()
        if self._reads not in fd:
            self._selectables[fd] = reader
            self._reads[fd] = 1
            self._updateRegistration(fd, EVFILT_READ, EV_ADD)
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/internet/kqreactor.py/KQueueReactor.addReader/swapped operands of `not in`