Method close_fd

python/python3/tornado/iostream.py:289–295

Closes the file underlying this stream. ``close_fd`` is called by `BaseIOStream` and should not be called elsewhere; other users should call `close` instead.

(self)

        raise NotImplementedError()

    def close_fd(self) -> None:
        """Closes the file underlying this stream.

        ``close_fd`` is called by `BaseIOStream` and should not be called
        elsewhere; other users should call `close` instead.
        """
        raise NotImplementedError()

    def write_to_fd(self, data: memoryview) -> int:
        """Attempts to write ``data`` to the underlying file.