On Wed, Aug 11, 2021 at 2:56 PM Thomas Grainger <[email protected]> wrote:
> Would:
> ```
> @dataclass
> class Node:
> global_node: __class__ | None
> ```
>
> "Just work" with co_annotations?
>
This feels too specialized to me.
It would be great to also handle forward references to other classes and
cyclic references, which are also somewhat common:
@dataclass
class NodeA:
component: NodeB | None
@dataclass
class NodeB:
component: NodeA | None
Another, slightly more complex example would be cyclic references within
two modules in an import cycle. For example, NodeA and NodeB could be
defined in different modules. The common thing is that the dependency cycle
can only be fully resolved after we have created both type objects. The
import cycle case is probably less common but I've seen it in real-world
code.
Jukka
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