[SmirkingRevenge]

This is the kind of thing I might turn into a simple function with short circuiting returns. I suppose the new syntax is just as readable, but I kind of like it this way a bit better.

    def get_reductor_value(cls, x):
        reductor = dispatch_table.get(cls)
        if reductor:
            return reductor(x)

        reductor = getattr(x, "__reduce_ex__", None)
        if reductor:
            return reductor(4)

        reductor = getattr(x, "__reduce__", None)
        if reductor:
            return reductor()

        raise Error("un(shallow)copyable object of type %s" % cls)