Initial sketch of a Rust API for CPython#41
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This commit introduces a rough sketch of a Rust API for CPython. The overall design goals are 1. Should be very similar to PyO3 API 2. Threadstate should be passed explicitly to ensure safety 3. Should feel familiar to C API users 4. If a C API for something is missing, we can add new internal C APIs (e.g. an operation where we need to pass the threadstate explicitly where it is fetched implicitly from TLS) 5. Should be minimal to what we need, we are not re-implementing all of PyO3 This is still a work in progress so things are still subject to change significantly.
alex
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Jul 21, 2026
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| //! The single raw-call layer. | |||
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FWIW, I think its easy to misread this file as being syscalls (like OS-syscalls). I don't have a particular suggestion, but I think a different name might make more sense.
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Agreed, I will probably rename it.
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Opening in draft as I plan on iterating on this more, but if people want to take a look and provide feedback I think it is in a state where that would be useful.
This is a rough sketch of a Rust API for CPython. The overall design goals are
This is still a work in progress so things are still subject to change significantly.
I worked with Fable on this initial draft. I will probably iterate from this baseline over the next week.