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Sep 27, 2019 · The Python community must follow the lifecycle of the reference software that is used to target the ABI baselines and plan accordingly. Python developers must carefully match system tooling or developer tooling to the hardware vendor software requirements. Solving both of these is a difficult but ultimately rewarding challenge.
Sep 4, 2021 · On some platforms, Python will look for and load shared library files named with the abi3 tag (e.g. mymodule.abi3.so). It does not check if such extensions conform to a Stable ABI. The user (or their packaging tools) need to ensure that, for example, extensions built with the 3.10+ Limited API are not installed for lower versions of Python.
Nov 13, 2024 · ABI Tag# The ABI tag indicates which Python ABI is required by any included extension modules. For implementation-specific ABIs, the implementation is abbreviated in the same way as the Python Tag, e.g. cp33d would be the CPython 3.3 ABI with debugging. The CPython stable ABI is abi3 as in the shared library suffix.
Feb 9, 2021 · PEP 384 and this document deal with the Limited API and the Stable ABI, two related but distinct concepts. In short: The Stable ABI is a promise that certain extensions compiled with CPython 3.x will be binary compatible with all subsequent versions of CPython 3.x. The Limited API is a subset of CPython’s C API that produces such extensions.
Sep 18, 2023 · PEP 703 poses some issues regarding the stable ABI. I’ve described these issue below along with a short proposal. tl;dr The --disable-gil builds of CPython 3.13 will not be able to load existing wheels that target the stable ABI. However, we can make wheels that target the 3.13+ stable ABI work with both the default (with GIL) and --disable-gil builds going forward. Background CPython C API ...
Nov 15, 2022 · An Application Binary Interface (ABI), allowing any language with C ABI support (like Rust or Golang) to link against CPython’s runtime and use the same internals. Developers can use the CPython API and ABI to write CPython extensions. These extensions behave exactly like ordinary Python modules but interact directly with the interpreter’s ...
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The Limited API and Stable ABI ¶. The Limited API and Stable ABI are two related features of Python. Extension modules that only use a safe subset of the Python C API (the Limited API) get a forward-compatibility guarantee (the Stable ABI) which means that the extension module can be used with any future version of Python, without recompilation.
