def rich_cast(renderable: object) -> "RenderableType":
    """Cast an object to a renderable by calling __rich__ if present.

    Args:
        renderable (object): A potentially renderable object

    Returns:
        object: The result of recursively calling __rich__.
    """
    from rich.console import RenderableType

    rich_visited_set: Set[type] = set()  # Prevent potential infinite loop
    while hasattr(renderable, "__rich__") and not isclass(renderable):
        # Detect object which claim to have all the attributes
        if hasattr(renderable, _GIBBERISH):
            return repr(renderable)
        cast_method = getattr(renderable, "__rich__")
        renderable = cast_method()
        renderable_type = type(renderable)
        if renderable_type in rich_visited_set:
            break
        rich_visited_set.add(renderable_type)

    return cast(RenderableType, renderable)
Cast an object to a renderable by calling __rich__ if present.

    Args:
        renderable (object): A potentially renderable object

    Returns:
        object: The result of recursively calling __rich__.
    
rich/protocol.py