twisted.py 文件源码

def removeWriter(self, writer):
        """Remove a Selectable for notification of data available to write."""
        if writer in self._writers:
            fd = self._writers.pop(writer)
            (reader, _) = self._fds[fd]
            if reader:
                # We have a reader so we need to update the IOLoop for
                # read events only.
                self._fds[fd] = (reader, None)
                self._io_loop.update_handler(fd, IOLoop.READ)
            else:
                # Since we have no reader registered, we remove the
                # entry from the _fds and unregister the handler from
                # the IOLoop.
                del self._fds[fd]
                self._io_loop.remove_handler(fd)