PyO3 / PyO3/pyo3

Pickle Support

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#100 22 comments 18 reactions 0 assignees View on GitHub

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

Description

As of right now its not possible to pickle classes created by PyO3.
This feature would be invaluable for situations where some form of persistence would be desireable.

As of right now it has trouble pickling after I call

    #[new]
    fn __new__(obj: &PyRawObject) -> PyResult<()>{

Otherwise the .__dict__ attributes are maintained prior to initialization with __new__

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The report concerns PyO3 classes using a Rust #[new] constructor and their Python dict; no source file or test is named. Start by reproducing the pickle failure around that constructor, then define and verify behavior for pickling and restoring the class state.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, rust
Domain
backend-api-design
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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