Method _render_parts

src/urllib3/fields.py:260–289

Helper function to format and quote a single header. Useful for single headers that are composed of multiple items. E.g., 'Content-Disposition' fields. :param header_parts: A sequence of (k, v) tuples or a :class:`dict` of (k, v) to format a

(
        self,
        header_parts: (
            dict[str, _TYPE_FIELD_VALUE | None]
            | typing.Sequence[tuple[str, _TYPE_FIELD_VALUE | None]]
        ),
    )

        return self.header_formatter(name, value)

    def _render_parts(
        self,
        header_parts: (
            dict[str, _TYPE_FIELD_VALUE | None]
            | typing.Sequence[tuple[str, _TYPE_FIELD_VALUE | None]]
        ),
    ) -> str:
        """
        Helper function to format and quote a single header.

        Useful for single headers that are composed of multiple items. E.g.,
        'Content-Disposition' fields.

        :param header_parts:
            A sequence of (k, v) tuples or a :class:`dict` of (k, v) to format
            as `k1="v1"; k2="v2"; ...`.
        """
        iterable: typing.Iterable[tuple[str, _TYPE_FIELD_VALUE | None]]

        parts = []
        if isinstance(header_parts, dict):
            iterable = header_parts.items()
        else:
            iterable = header_parts

        for name, value in iterable:
            if value is not None:
                parts.append(self._render_part(name, value))

        return "; ".join(parts)

    def render_headers(self) -> str:
        """