Method clear_header

tornado/web.py:408–415

Clears an outgoing header, undoing a previous `set_header` call. Note that this method does not apply to multi-valued headers set by `add_header`.

(self, name: str)

        self._headers.add(name, self._convert_header_value(value))

    def clear_header(self, name: str) -> None:
        """Clears an outgoing header, undoing a previous `set_header` call.

        Note that this method does not apply to multi-valued headers
        set by `add_header`.
        """
        if name in self._headers:
            del self._headers[name]

    # https://www.rfc-editor.org/rfc/rfc9110#name-field-values
    _VALID_HEADER_CHARS = re.compile(r"[\x09\x20-\x7e\x80-\xff]*")