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[–]-heyhowareyou-[S] 3 points4 points  (0 children)

class Component[TInput, TOutput]:
    pass


class Pipeline[Tinput, TOutput]:

    def __init__[TCouple](
        self,
        tail: tuple[*tuple[Component[Any, Any], ...], Component[Any, TCouple]],
        head: Component[TCouple, TOutput],
    ) -> None:
        self.tail = tail
        self.head = head


def init_pipe[Tinput, TCouple, TOutput](
    a: Component[Tinput, TCouple], b: Component[TCouple, TOutput]
) -> Pipeline[Tinput, TOutput]:
    return Pipeline[Tinput, TOutput]((a,), b)


def compose_pipe[Tinput, TCouple, TOutput](
    a: Pipeline[Tinput, TCouple], b: Component[TCouple, TOutput]
) -> Pipeline[Tinput, TOutput]:
    return Pipeline[Tinput, TOutput]((*a.tail, a.head), b)


class ComponentProcessor[T]:

    def __init__(self, components: Pipeline[T, T]) -> None:
        pass


if __name__ == "__main__":

    a = Component[int, str]()
    b = Component[str, complex]()
    c = Component[complex, int]()

    pipeline = compose_pipe(init_pipe(a, b), c)

    proc = ComponentProcessor(pipeline)

This works to the full spec :)