revisit.py

    import operator

    def lamesetter(a, b, c):
        operator.attrgetter(b)(a) = c

    def process(self):
        (O, V), Ov = self.inputs, self.outputs
        Prop = self.formula or self.selected_mode

        sv_setattr = getattr if '.' in Prop else lambda a, b: operator.attrgetter(b)(a)
        sv_getattr = setattr if '.' in Prop else lamesetter

        objs = O.sv_get()
        v = V.sv_get()

        if isinstance(objs[0], list):
            if V.is_linked:
                v = v if isinstance(v[0], list) else [v]
                objs, v = safc(objs, v)

                for OBL, VALL in zip(objs, v):
                    for i, i2 in zip(safc(OBL, VALL)):
                        sv_setattr(i, Prop, i2)

            elif Ov.is_linked:
                Ov.sv_set([[sv_getattr(i, Prop) for i in OBL] for OBL in objs])

        else:
            if V.is_linked:
                v = v[0] if isinstance(v[0], list) else v
                objs, v = safc(objs, v)

                for i, i2 in zip(objs, v):
                    sv_setattr(i, Prop, i2)

            elif Ov.is_linked:
                Ov.sv_set([sv_getattr(i, Prop) for i in objs])