PyO3 / PyO3/pyo3

`arbitrary_self_types` approaching stabilisation, interaction with `PyAnyMethods` etc

Open
#4,869 2 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Rust
Stars
16.2k
Forks
1k
Avg merge
2d 6h
Merged PRs (30d)
66

Description

We built the PyAnyMethods traits with the assumption that we might be able to use arbitrary_self_types as an off-ramp in the future. The traits seem to have been adopted well though it would be nice to remove them again for simplicity if possible.

The latest iteration of arbitrary_self_types is now feature complete on nightly and looks like there might be a stabilisation report soon: https://github.com/rust-lang/rust/issues/44874#issuecomment-2607464314

Has anyone got some time / energy to experiment with this for our potential use in PyO3? As well as in PyAnyMethods, it might be useful in PyRef<MyClass> / Bound<MyClass> etc. for #[pymethods] receivers.

I would love to try, but I am experiencing a drought of time which is probably lasting until March 😢

cc @adetaylor

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the PyAnyMethods traits and the references to PyRef, Bound, and #[pymethods], then review the linked Rust arbitrary_self_types stabilisation discussion. Experiment on nightly to determine whether the traits can be removed and whether the receiver forms work; done means documenting or implementing a viable simplification.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, rust
Domain
backend-api-design
Issue type
Refactor
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.