def apply_style(
        cls,
        segments: Iterable["Segment"],
        style: Optional[Style] = None,
        post_style: Optional[Style] = None,
    ) -> Iterable["Segment"]:
        """Apply style(s) to an iterable of segments.

        Returns an iterable of segments where the style is replaced by ``style + segment.style + post_style``.

        Args:
            segments (Iterable[Segment]): Segments to process.
            style (Style, optional): Base style. Defaults to None.
            post_style (Style, optional): Style to apply on top of segment style. Defaults to None.

        Returns:
            Iterable[Segments]: A new iterable of segments (possibly the same iterable).
        """
        result_segments = segments
        if style:
            apply = style.__add__
            result_segments = (
                cls(text, None if control else apply(_style), control)
                for text, _style, control in result_segments
            )
        if post_style:
            result_segments = (
                cls(
                    text,
                    (
                        None
                        if control
                        else (_style + post_style if _style else post_style)
                    ),
                    control,
                )
                for text, _style, control in result_segments
            )
        return result_segments
Apply style(s) to an iterable of segments.

        Returns an iterable of segments where the style is replaced by ``style + segment.style + post_style``.

        Args:
            segments (Iterable[Segment]): Segments to process.
            style (Style, optional): Base style. Defaults to None.
            post_style (Style, optional): Style to apply on top of segment style. Defaults to None.

        Returns:
            Iterable[Segments]: A new iterable of segments (possibly the same iterable).
        
rich/segment.py