PyO3/pyo3

Expand performance section of the guide

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#3,310 opened on Jul 11, 2023

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Description

  • Overhead of conversions (i.e. PyList vs Vec etc.)
  • String intern!
  • Vec<u8> becoming list[int] (and thus being very slow), usage of Cow<[u8]> as an alternative
  • #[pyo3(get)] deep-cloning non-Py data
  • dictionary dispatch, i.e. look-up based on type object identity

Contributor guide

Research direction
Research each bullet point (e.g., conversion overhead, string intern, Vec<u8> vs Cow<[u8]>, deep cloning from #[pyo3(get)], dictionary dispatch) and provide clear explanations and code examples for the guide's performance section.
Tech stack
rust
Domain
backenddocumentation
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustPython
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70