PyO3/pyo3

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Rust bindings for the Python interpreter

Stars: 16.2k
Forks: 1k
Open beginner issues: 1
Indexed issues: 297
Avg merge: 2d 6h
Merged PRs (30d): 66

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue help wanted

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297 open issues indexed

`no_std` support for `PyMutex` Open

no_std

Difficulty 5/5 Over a week Newbie friendliness 32/100

PyO3/pyo3#6436 · Opened Sep 19, 2026
`IntoPyObject` doesn't intern dictionary keys Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PyO3/pyo3#6427 · 2 comments · Opened Sep 17, 2026
`#[pyfunction]` gets `METH_STATIC` since 0.28, which makes calls slower on CPython 3.11+ Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6426 · 5 comments · Opened Sep 17, 2026
Bump to Rust 1.85, edition 2024 Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6418 · 1 comment · 6 reactions · Opened Sep 15, 2026
Xcode-provided python uses the wrong libdir Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

PyO3/pyo3#6415 · 2 comments · Opened Sep 14, 2026
CI: Inefficent caching of rust builds Open

CI

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6405 · 3 comments · Opened Sep 11, 2026
Type stubs customization Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

PyO3/pyo3#6399 · 4 comments · 1 reaction · Opened Sep 9, 2026
Borrowed constructor argument can outlive its owner Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6392 · 1 comment · 1 reaction · Opened Sep 6, 2026
3.15 rc 2 crash on macos Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PyO3/pyo3#6390 · 1 comment · Opened Sep 6, 2026
Assign an alias to a type hint Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6347 · Opened Aug 24, 2026
`DefaultHasher` for `no_std` Open

no_std

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PyO3/pyo3#6329 · 2 comments · Opened Aug 18, 2026
Use of PyPyModule_FromDefAndSpec2 is broken with pypy 7.3.19 Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6305 · 1 comment · Opened Aug 6, 2026
sdist release of `pyo3-introspection` 0.29.2 failed Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

PyO3/pyo3#6303 · 1 comment · Opened Aug 6, 2026
GlobalAlloc that uses PyMem_Raw* methods Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

PyO3/pyo3#6268 · 21 comments · 1 reaction · Opened Jul 31, 2026
Unsoundness in buffer APIs Open

Unsound

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PyO3/pyo3#6267 · 3 comments · Opened Jul 31, 2026
Python 3.15 final will allow including platform tags in stable abi extension filenames Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PyO3/pyo3#6258 · 1 comment · Opened Jul 28, 2026
`experimental-inspect`: `__all__` is set at runtime by `#[pymodule]` but never emitted into the stubs Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

PyO3/pyo3#6241 · Opened Jul 25, 2026
`experimental-inspect`: Add `stubtest` test in CI to ensure generated stubfiles match binary interfaces Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PyO3/pyo3#6240 · 1 reaction · Opened Jul 25, 2026
`experimental-inspect`: `PyList` / `PyDict` / `PyTuple` emit bare `list` / `dict` / `tuple`, which fail `mypy --strict` Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

PyO3/pyo3#6236 · Opened Jul 24, 2026
`PyDict::iter` don't align with python semantics Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

PyO3/pyo3#6222 · Opened Jul 21, 2026
switch to `build.warnings` in CI Open

easy github-actions

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

PyO3/pyo3#6205 · Opened Jul 15, 2026
Error Message for methods that return Self for classes that are subclasses of other classes. Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6197 · Opened Jul 11, 2026
Panic payload is replaced at FFI boundary instead of transported across Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

PyO3/pyo3#6194 · 2 comments · Opened Jul 7, 2026
pyo3-build-config: CONDA_PREFIX set but no valid Python interpreter causes build failure Open

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

PyO3/pyo3#6177 · 1 comment · Opened Jul 1, 2026
CI update's Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

PyO3/pyo3#6171 · Opened Jun 30, 2026
[BUG] PyO3 0.29 abi3 modules on android linked against `libpython3` fail to load Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

PyO3/pyo3#6165 · 7 comments · Opened Jun 27, 2026
[Stubs] Inner classes extending outer for data-carrying enums Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

PyO3/pyo3#6163 · 5 comments · 1 reaction · Opened Jun 26, 2026
Initialize python from Config Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

PyO3/pyo3#6153 · Opened Jun 22, 2026
Clarify `#[pyclass(eq_int)]` docs Open

Difficulty 1/5 1-3 hours Newbie friendliness 78/100

PyO3/pyo3#6142 · 1 comment · Opened Jun 18, 2026
freelist feature causes slowdowns universally Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

PyO3/pyo3#6133 · 4 comments · Opened Jun 13, 2026
0.30 release Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

PyO3/pyo3#6126 · Opened Jun 11, 2026
negative-to-unsigned conversions are inconsistent between `ValueError` and `OverflowError` Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6116 · Opened Jun 9, 2026
Make pyo3-build-config more caching friendly Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PyO3/pyo3#6113 · 5 comments · Opened Jun 7, 2026
Misaligned pointer dereference at interpreter finalization when using `PyTzInfo` subclass in dev mode Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

PyO3/pyo3#6110 · 1 comment · 1 reaction · Opened Jun 5, 2026
[PyPy] Segfault in PyErr_Fetch when calling .hash()? inside __getitem__ Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6109 · 7 comments · Opened Jun 5, 2026
__getattr__ cannot be accessed from python by looking it up on the type Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

PyO3/pyo3#6101 · Opened Jun 3, 2026
Use `stable_abi.toml` from CPython to expand FFI checks for items in the stable ABI Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

PyO3/pyo3#6092 · 1 reaction · Opened Jun 1, 2026
`list` iterator implementation doesn't match Python semantics Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

PyO3/pyo3#6087 · 3 comments · Opened Jun 1, 2026
`PyRefMut::as_super` and `PyClassGuardMut::as_super` enable type confusion Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

PyO3/pyo3#6083 · 4 comments · Opened May 31, 2026
PySet::empty could be infallible Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6074 · 3 comments · Opened May 26, 2026
Lazy import compatilibty? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

PyO3/pyo3#6060 · 2 comments · Opened May 19, 2026
Use new `PyLong*` API (Python 3.14+) for additional integer conversions (`BigInt`, `rust_decimal`, `bigdecimal`) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PyO3/pyo3#6040 · Opened May 12, 2026
Make `IntoPyObject` fallible for all integer conversions Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6039 · Opened May 12, 2026
reversible arithmetic operators don't respect subclassing if only one arm implemented Open

Difficulty 4/5 3-5 days Newbie friendliness 62/100

PyO3/pyo3#6024 · Opened May 9, 2026
create_interface macro example from documentation does not produce usable classes when used inside pymodule Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PyO3/pyo3#6021 · 3 comments · Opened May 8, 2026
`#[pyo3(get)]` and `#[getter]` on same field silently collide Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PyO3/pyo3#6000 · 1 comment · 2 reactions · Opened Apr 24, 2026
Having an 'x' getter and a 'get_x' method leads to an internal naming conflict Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PyO3/pyo3#5974 · 5 comments · Opened Apr 14, 2026
Expand test coverage for FFI compat shims Open

FFI

Difficulty 4/5 3-5 days Newbie friendliness 52/100

PyO3/pyo3#5969 · Opened Apr 13, 2026
`fixup_for_abi3_version` downgrades version causing wrong link library name when cross-compiling for Android Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

PyO3/pyo3#5960 · 7 comments · Opened Apr 10, 2026
Add support for defining metaclasses in Rust Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

PyO3/pyo3#5958 · 12 comments · Opened Apr 8, 2026

PyO3/pyo3

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