Method redirect

python/python3/tornado/web.py:798–816

Sends a redirect to the given (optionally relative) URL. If the ``status`` argument is specified, that value is used as the HTTP status code; otherwise either 301 (permanent) or 302 (temporary) is chosen based on the ``permanent`` argument. The default is 302 (tempor

(
        self, url: str, permanent: bool = False, status: Optional[int] = None
    )

        return get_signature_key_version(value)

    def redirect(
        self, url: str, permanent: bool = False, status: Optional[int] = None
    ) -> None:
        """Sends a redirect to the given (optionally relative) URL.

        If the ``status`` argument is specified, that value is used as the
        HTTP status code; otherwise either 301 (permanent) or 302
        (temporary) is chosen based on the ``permanent`` argument.
        The default is 302 (temporary).
        """
        if self._headers_written:
            raise Exception("Cannot redirect after headers have been written")
        if status is None:
            status = 301 if permanent else 302
        else:
            assert isinstance(status, int) and 300 <= status <= 399
        self.set_status(status)
        self.set_header("Location", utf8(url))
        self.finish()

    def write(self, chunk: Union[str, bytes, dict]) -> None:
        """Writes the given chunk to the output buffer.