Actually, ShareableList feels like a tuple really (as it’s impossible to change its length). If we could mix ShareableList and collections.namedtuple together, it would get us 90% there (99.9% if we use typing.NamedTuple). Unfortunately, I can’t decipher either one [1, 2] from the first glance – maybe if I get some more sleep?

[1]: https://github.com/python/cpython/blob/3.13/Lib/collections/...

[2]: https://github.com/python/cpython/blob/3.13/Lib/typing.py#L2...