def migrate_context(cls, context, version):
values = context.values
if version < 3:
values["attr_color"] = values["graph"]["attr_color"]
values["attr_size"] = values["graph"]["attr_size"]
values["attr_shape"] = values["graph"]["attr_shape"]
values["attr_label"] = values["graph"]["attr_label"]
if version < 4:
if values["attr_x"][1] % 100 == 1 or values["attr_y"][1] % 100 == 1:
raise IncompatibleContext()
def migrate_context(context, _):
if context.foo == 13:
raise IncompatibleContext()
