Repository: ManimCommunity/manim
File: manim/mobject/svg/tex_mobject.py (Python)

Code before:
        if isinstance(arg, str):
            part = self.get_part_by_tex(arg)
        elif isinstance(arg, int):
            part = self.submobjects[arg]
        else:
            raise TypeError(f"Expected int or string, got {arg}")
        for other_part in self.submobjects:
            if other_part is part:
                other_part.set_fill(opacity=1)
            else:
                other_part.set_fill(opacity=opacity)


class Title(Tex):
    """
    Example
    --------
    .. manim:: TitleExample
        :save_last_frame:

        import manim
        class TitleExample(Scene):
            def construct(self):
                banner = ManimBanner()
                self.play(banner.expand())
                ti=Title(f"manim version {manim.__version__}")
                self.add(banner, ti)
    """

    def __init__(
        self,
        *text_parts,
        scale_factor=1,
        include_underline=True,
        match_underline_width_to_text=False,
        underline_buff=MED_SMALL_BUFF,
        **kwargs,
    ):
        self.scale_factor = scale_factor
        self.include_underline = include_underline
        self.match_underline_width_to_text = match_underline_width_to_text
        self.underline_buff = underline_buff
        Tex.__init__(self, *text_parts, **kwargs)
        self.scale(self.scale_factor)
        self.to_edge(UP)
        if self.include_underline:
            underline_width = config["frame_width"] - 2
            underline = Line(LEFT, RIGHT)
            underline.next_to(self, DOWN, buff=self.underline_buff)
            if self.match_underline_width_to_text:
                underline.match_width(self)

Review comment (suggestion):
```suggestion
                ti=Title(f"Manim version {manim.__version__}")
```

Code after:
        if isinstance(arg, str):
            part = self.get_part_by_tex(arg)
        elif isinstance(arg, int):
            part = self.submobjects[arg]
        else:
            raise TypeError(f"Expected int or string, got {arg}")
        for other_part in self.submobjects:
            if other_part is part:
                other_part.set_fill(opacity=1)
            else:
                other_part.set_fill(opacity=opacity)


class Title(Tex):
    """
    Examples
    --------
    .. manim:: TitleExample
        :save_last_frame:

        import manim

        class TitleExample(Scene):
            def construct(self):
                banner = ManimBanner()
                title = Title(f"Manim version {manim.__version__}")
                self.add(banner, title)

    """

    def __init__(
        self,
        *text_parts,
        scale_factor=1,
        include_underline=True,
        match_underline_width_to_text=False,
        underline_buff=MED_SMALL_BUFF,
        **kwargs,
    ):
        self.scale_factor = scale_factor
        self.include_underline = include_underline
        self.match_underline_width_to_text = match_underline_width_to_text
        self.underline_buff = underline_buff
        Tex.__init__(self, *text_parts, **kwargs)
        self.scale(self.scale_factor)
        self.to_edge(UP)
        if self.include_underline:
            underline_width = config["frame_width"] - 2
            underline = Line(LEFT, RIGHT)
            underline.next_to(self, DOWN, buff=self.underline_buff)
            if self.match_underline_width_to_text: