Method fileno

src/click/testing.py:192–200

Return the file descriptor of the saved original stream when ``CliRunner`` runs in ``fd`` mode. Otherwise delegate to :class:`~io.TextIOWrapper`, which raises :exc:`io.UnsupportedOperation` for a ``BytesIO``-backed buffer.

(self)

        """

    def fileno(self) -> int:
        """Return the file descriptor of the saved original stream when
        ``CliRunner`` runs in ``fd`` mode. Otherwise delegate to
        :class:`~io.TextIOWrapper`, which raises
        :exc:`io.UnsupportedOperation` for a ``BytesIO``-backed buffer.
        """
        if self._original_fd >= 0:
            return self._original_fd
        return super().fileno()

    @property
    def name(self) -> str: